Boulder Daily Climatology and Daily Records

The average high and low temperature as well as the record for each date for the high (highest daily maximum and highest daily minimum) as well as record lowest daily minimum and daily maximum are available for each date(divided into monthly sections). Snow records are from 1948 onward and temperature from 1897.Hail is counted for the purposes of records. Temperatures are in degrees Fahrenheit and snow depths are in inches as those are the unit of measurement.

Months

JanuaryMaySeptember
FebruaryJuneOctober
MarchJulyNovember
AprilAugustDecember

Note, for record highs, the first value is the highest daily maximum value. The 2nd is the highest daily minimum value. For lows, the first is the lowest daily minimum value and the 2nd is the lowest daily maximum value. Year is for the highest maximum temperature and for the lowest minimum.

Plot of daily average max and min temperature
January climatology  
DayNormal
High
Normal
Low
Record
High
YearRecord
Low
Year snow/year
1411870/441997-14/-319427.5/1985
2421770/491997-14/419116.0/1971
3421868/441918&97-10/419118.5/1949
4431967/441927-14/8195910.7/2014
5441969/442012,1956-13/11194211.5/2007
6431970/461954-20/-919139.2/1998
7441969/492006-22/-419131.5/1986
8452170/501909-16/2193715.5/1962
9442277/471934-11/919734.1/1993
10442070/551990-13/919627.4/2001
11431869/431953-18/-219634.7/2012
12441870/461953-22/119636.0/2009
13452169/451928-12/319973.0/1972
14472367/522006-9/619725.0/1967
15452369/451901-8/6197210.0/1987
16452171/461974-9/419307.0/2001
17442067/391974-33/619304.7/1996
18442165/431965,2009-19/519844.2/1988
19452169/511986,2009-17/619638.5/1990*
20441973/472005-15/619359.1/1973
21441970/432009-18/019304.3/1975
22442174/491925-11/1019173.3/1974
23452071/381981-10/1219634.4/2002
24452270/441968-8/8194910.4/1978
25452170/471935-8/1019036.5/1996
26442072/451982-20/719034.9/1961
27451968/491986,2003-6/420095.7/2014
28452068/502011-9/719038.6/1989
29442070/441931-12/-319516.5/1994
30441971/471986-6/1019515.8/2002
31452069/531989-9/419857.6/2005
* snow record not from official dataset Back to top

February climatology  

DayNormal
High
Normal
Low
Record
High
YearRecord
Low
Year snow/year
1442071/481934-15/619513.3/2014
2442074/491934-17/120111.3/1977
3442274/471954-17/-5198916.4/2012
4462173/461935-18/-1219898.5/1959
5462275/461963-24/619893.3/1975
6462267/451927/2007-16/519145.0/1986
7462074/441987-19/-319336.5/1980
8452079/511954-28/7193613.5/1956
9442178/471954-16/-719336.0/1953
10472272/481962-15/1219335.5/1988
11472275/491962-15/119057.2/1965
12482372/451921-20/4190510.4/1968
13462374/501979-9/719056.4/1966
14452170/481981-6/1419034.9/2001
15452067/451982-12/1019037.4/1965
16472369/421970-11/519006.5/1978
17472368/481970-11/1019365.5/1988
18462370/461930-14/920066.5/1955
19462271/491981-4/1620067.6/1987
20472374/481981-1/1719188.0/1971
21462377/461982 4/1519116.0/2010
22482373/451982-1/1519118.5/1960
23472374/522002-5/1618997.0/1997
24462372/541981-4/1120038.0/2013
25472475/581986-6/1719355.9/2002
26472372/441932-6/919625.0/1997
27472375/501932-8/719624.3/2003
28472374/501932,2006-11/1219626.0/2007
29512368/481940-5/2419602.2/2004
Back to top

March climatology 

DayNormal
High
Normal
Low
Record
High
Year
of high high
Record
Low
Year of
low low
snow/year
1482473/512008-1/1719279.0/2002
2492475/511901-6/1520023.9/2008
3472473/461921-4/1419437.0/1964
4452374/492009-1/1019605.1/1976
5462373/441925-2/1519489.2/1971
6482373/511972-8/221943 11.6/1990*
7492370/431972-8/201943 10.0/1998
8512574/511986-1/131932/985.2/2006
9512777/471989-13/131932 16.1/1992
10502679/501900-7/1119325.5/1970
11492678/561900-9/121932 11.0/1956
12502674/521900-10/171932 13.0/1963
13512675/5220074/2519507.0/1963
14492676/5119254/2019258.4/1997
15492676/5220132/1719064.0/1960
16532775/502011-4/1219068.0/1983
17542875/5419080/1819245.6/1988
18532877/491907-5/141923 16.9/1998
19522879/621907-1/161965 12.3/2010
20522980/571997-3/1619276.5/1989
21532883/541910-1/241914 17.1/1952
22552980/5619100/1418986.5/1984
23542976/521967,20123/18189810.6/2013
24533076/5119982/?1965 10.2/1996
25532978/531985-2/141996 12.5/1959
26522779/511971-1/23195516.2/2009
27522778/551986-5/201931 10.6/1975
28532878/491986-2/2319759.4/1972
29532979/5519434/2319758.3/1987
30562879/5120106/291926 18.5/1970
31573081/5620121/2118998.7/1988
* snow record not from official dataset Back to top

April climatology 

DayNormal
High
Normal
Low
Record
High
YearRecord
Low
Year snow/year
1563178/522004 7/25193610.4/1975
2583382/512011-3/33197520.6/1957
3563177/53194312/26194512.0/1986
4563178/471959 9/201945 5.1/1971
5583280/521991 5/321939 6.8/1990
6593380/541991 4/221938 2.5/1964
7573381/53193015/26193812.3/1957
8573383/511930 9/32197311.5/1959
9593378/541977 8/28197313.1/2013
10593480/551960 2/29201311.1/1995
11583481/561982 9/26194012.0/1953
12593478/501908 2/331997 7.5/1991
13613583/52200614/38195910.3/1974
14623680/57196314/272014 3.6/1949
15623685/54198515/33194510.4/2013
16613581/52195821/311947 3.5/1998,2013
17623683/55198717/311901 8.2/1968
18623684/53198710/312013 8.2/1975
19613782/55196213/341966 5.0/1966
20623683/68198915/34196610.5/1984
21643788/54198914/401907 4.8/1952
22653984/59198918/421920 7.4/2001
23633987/57199422/321931 7.5/2013
24623887/56201218/32201316.4/1997
25623784/59193820/331924 2.5/2006
26633885/55194615/291924 4.0/1995
27633885/59191022/371924 3.7/2009
28643882/60194323/301917 2.1/2005
29633884/59194821/331903 8.5/2005
30633887/55199219/341909 6.7/1991
Back to top

May climatology  

DayNormal
High
Normal
Low
Record
High
Year
of high high
Record
Low
Year of
low low
snow/year
1653986/55194323/34190910.7/2013
2654186/56198117/3520132.5/1954
3654086/60194720/3019070.5/1967
4674188/592000,201228/3519441.0/1950
5674289/60200029/3519509.0/1978
6654087/591963,2000,2004 22/37191714.0/1978
7664287/65196328/4120100.9/2010
8664286/62201130/3920100
9684288/59191625/3420020
10674388/62191626/2919795.2/2003
11684288/61196321/4519461.7/2014
12684288/60196224/3319535.1/2014
13684289/65198827/381953T/2010
14684388/60199627/3919122.0/1967
15694493/59197829/4219160
16694493/62199630/3719234.0/1957
17724592/61196428/3919427.1/1983**
18724693/59197029/401930TR/1971
19714592/63193922/4019461.5/1960
20704593/62195421/4019460.2/2001
21704590/682006 26/3520013.6/2001
22704589/66201232/3519310
23714690/651989,00 34/481930TR/1971&1994
24734790/58196732/441994,20021.1/2002
25734787/661969,201332/5019508.7/1950
26724791/66196932/4719500.0/1950
27714792/60200633/5219500
28714795/60200030/3619470
29734895/722000,330/451947TR/1975
30744891/68198434/421973TR/1973
31734889/69200231/5119790
Back to top

June climatology  

DayNormal
High
Normal
Low
Record
High
YearRecord
Low
Year snow/year
1734889/62199732/481979
2744892/62200630/4519511.5/1951
3744995/65195832/4619510.7/1951
4754994/66199036/521937
5765095/61194633/491937/98TR/1953/98
6754995/70200033/541998
7765095/651934/2000 35/5519150.1/93 (hail)
8765098/64198534/582007
9775096/65198537/562014
10775197/70195237/491975
11775398/69201336/441975
127852100/67195232/4419471.0/1947
13795398/69195232/451947TR/1969
147952100/67200635/501969
157953100/71195232/451945
16805394/65197732/441945
17805398/681946 38/491912
18805398/701936,201241/531945
19815397/74193438/561976
20825496/68196839/671946
21815597/68192241/602000
22835598/811954,201240/562004 Tr/1996 (hail)
238456104/74195444/641906
248356101/80201243/551976Tr/2006 (hail)
258456101/69201242/611958
268456101/691971&9442/611968,2003
278657100/69199041/701985
28865896/73193147/611945
29855799/73195345/581978
30845799/70199441/581935
Back to top

July climatology  

DayNormal
High
Normal
Low
Record
High
Year
of high high
Record
Low
Year of
low low
rain/year snow/year
18456101/75200246/671995 0.64/1970 
2855799/71199045/671915 0.64/1981 
3855898/73196443/571922 0.76/1972 
4855798/731989,201140/561921 0.52/1972 
5855899/76198942/691972 0.41/2010 
68557100/69197344/621931 0.26/1954 
78558100/72195141/621904 1.08/2010 
88558100/75198946/671929 1.47/1967 
9865899/70197646/631929 1.98/2012 
108659100/75195449/701922 1.78/1983 
118659104/76195450/681944 0.58/1993 
128559103/75195447/621922 0.69/1987 
138760102/71195444/661987 0.37/1973 
148559 99/72193147/641973 0.41/1993 
158558100/70192546/641908 0.27/1967 
168659100/74200647/651992 0.67/2012 
17865998/712002,2010 46/671992 1.81/2000 
188560100/72199849/611972 0.30/1965 
198559100/74193446/631902 0.63/1985 
208559100/82199845/651900 2.12/1990 
218559101/722005 48/661915 2.18/1977 
228559102/77193147/671973 0.61/1998 
23855999/75200547/611990 1.66/2004 
248459101/741953,2003 49/58 2004 0.82/1965 
25865999/72193149/731973 1.80/1977 
26866098/76193548/711926 1.06/1964 
278660101/70194748/681913 1.02/1982 
288660100/72194752/701911,2009 0.76/1982 
298660100/73194746/681971 1.26/1953 
308659 97/72196645/571971 2.56/2014 
31 86 59100/692002 47/672009 1.47/1956 
Back to top

August climatology 

DayNormal
High
Normal
Low
Record
High
Year
of high high
Record
Low
Year of
low low
rain/year snow/year
18560100/73193844/621995 0.45/1956 
2856099/72200849/641995* 0.69/1976 
3845998/73195449/591915 3.06/1951 
4855998/75194745/641927 1.79/1999 
5855998/70196247/681928 0.98/2002 
68459101/76197950/721921 1.59/1997 
7845999/70197547/541939 0.38/1988 
88558101/72196946/681939 0.25/1963  
98459101/69194745/651939 1.00/2001 
10845897/74196940/621912 1.40/1968  
11845797/70195947/651974 1.91/1994 
12855899/72199647/682004 0.53/1990 
13855897/68200744/682007 0.82/1975 
14855899/74193548/622004 0.93/1961 
158558 97/69194447/631978 0.87/2008 
168559100/72200247/561975,2009 1.31/2008 
17845897/73194845/722008 0.88/1997 
18845898/77200248/701987 1.32/2003 
19835796/70201343/601939 1.42/2004 
20825797/70201347/612004 1.65/1982 
21825797/76196044/601920 0.26/1999 
22825697/70194946/641966 0.60/1984 
23835798/69201147/581945 0.41/1952 
248357102/70193645/631968 2.00/1992 
25845696/76201137/611910 0.29/1949 
26845796/73195339/661910 0.37/1980 
27835796/71192639/651910 0.18/1953,2014 
28835696/70194840/652004 0.34/2014 
29825697/69195444/632004 0.47/1952 
30825696/721948,200546/691964 1.83/1967 
31825596/691960,201142/591932 1.93/1951 
Back to top

September climatology 

DayNormal
High
Normal
Low
Record
High
YearRecord
Low
Yearrain/year snow/year
1835597/72195542/611967 0.57/19660.0
28254100/69198342/671974 0.92/19660.0
3815394/751960,201333/511961 1.16/1961TR/1961
4805396/67196039/581961 0.50/19710.0
5805395/69195240/581968 0.20/19820.0
6815397/68195938/501929 0.33/19960.0
7805493/661953,201334/411929 1.02/20110.0
8785393/66195935/411941 1.31/2001TR/2001
9785194/69198332/461941 0.48/19800.0
10785094/65201235/421962 1.02/20130.0
11775191/64197434/431898 1.92/20130.6/1989
12775093/69195631/4019749.08/20132.7/1974
13765095/69199031/501993 2.44/20131.0/1993
14764994/63199028/4419930.85/19820.0
15754992/65194830/4419031.94/20130.0
16754893/62200030/4819120.49/2013TR/1965
17764893/65200027/361965 1.64/197118.0/1971
18764993/64194730/441971 0.89/19933.0/1971
19764993/65201022/4519710.82/19960.0
20754793/66195629/3619831.50/19612.3/1965
21744689/67200731/3619121.07/19958.3/1995
22744790/63195423/3919951.47/1970T/1994
23734791/67194730/3920000.80/19971.4/2000
24734692/66194928/3820001.44/19595.1/2000
25734588/66195324/4619261.54/19701.5/1970
26714588/671956,201128/451942 0.51/1996,20123.3/1996
27724392/60195324/3619080.50/19762.8/1996
28714490/63201023/351945 1.23/19859.0/1985
29714489/64196418/351985 1.03/195910.4/1959
30724591/66198015/3719850.82/19910.5/1959
Back to top

October climatology 

DayNormal
High
Normal
Low
Record
High
YearRecord
Low
Year snow/year
1724590/62195323/361985 3.5/1959
2724585/64201227/441959 2.8/1959
3714488/60196730/471927,2009 2.0/1969
4714488/61192230/37195010.2/1969
5694390/63194727/421991 3.0/1969
6684285/61199328/351995 0.9/2000
7704288/64195623/421970 3.5/1970
8694286/59196522/341970 4.1/1990
9694286/64196524/411990 1.0/1985
10694288/62191015/382009 4.8/2009
11694187/58199620/291977 9.7/1969
12674089/58195020/271969 6.5/1969
13684188/63198910/301969 2.0/1985
14674185/59196213/361969 3.0/1966
15664085/57195820/441970 9.2/1969
16653887/55199120/35196912.0/1948
17653885/59200315/331999 3.7/2006
18653886/57192619/261925 3.2/2013
19633887/59200317/301925 1.5/1982
20643887/59195019/361916 3.2/1949
21653884/60195012/281911 5.8/2006
22633885/60200319/281936 3.0/1995
23633686/52200322/291906 4.8/1975
24633681/55195219/321975 7.7/1997
25623680/55195917/32193222.1/1997
26623681/55196619/322009 11.5/2011
27623679/54191514/342011 2.0/1980
28613680/52193311/301925 16.7/2009
29583483/521968-2/26191710.2/1961
30583480/5619336/231992 9.6/1972
31583383/5619505/211991 4.9/1989*
Back to top

November climatology 

DayNormal
High
Normal
Low
Record
High
YearRecord
Low
Year snow/year
1573475/52198810/2519519.7/1972
2563079/541931-2/1819518.6/2011
3573177/501915 1/3019914.8/1990
4583279/51195214/2719673.5/1953
5573178/581952 6/3119336.5/1951
6583277/55198011/3119388.2/1990
7563278/541980 9/2819904.1/1998
8563078/55197817/28199012.4/1950
9553075/561927 5/22195010.0/1985
10573075/561956,2005-3/1819504.0/1997
11542979/521989-1/719115.5/1948
12542978/521989-2/1119119.0/1979
13532974/531999-6/919162.0/1980
14552875/461905-2/28191616.0/1994
15542975/471953 1/2819978.0/1987
16522874/481999 2/2619597.3/1996
17522975/481981 4/2519035.1/1969
18512878/482008 2/2019034.5/1961
19532878/561989 6/1519067.5/1956
20522875/541939 3/23190622.0/1979
21502672/502012 0/2019296.9/1992
22522573/491939/2006-7/8192910.5/1999
23522773/501939-2/15200312.1/1992
24532770/471933 3/2719189.3/1992
25532977/501990 -8/2219936.3/1952
26512772/521960-1/27191913.0/1959
27482575/481903-12/3191911.5/1983
28492469/521886-12/1219196.1/2004
29492476/541899 1/25191911.8/2006
30502668/571956 0/121975/20066.0/1986
Back to top

December climatology  

DayNormal
High
Normal
Low
Record
High
YearRecord
Low
Year snow/year
1492669/511995-5/919857.6/2011
2502571/481926-9/1319196.9/2009
3492670/501941-2/2519198.0/2011
4482575/481965-1/81909,20097.2/2008
5472471/462012-12/719728.4/1972
6482369/431981-16/519728.0/1964
7462368/451984-15/7192712.4/1988
8452171/431940-9/719324.7/1967
9442174/481957-20/-2191910.5/1985
10462170/461915-12/319323.2/1963
11462271/461934-18/-319326.7/2007
12462267/471921-19/1419327.1/1967
13442174/531921-10/519264.5/1987
14432069/451924-11/519267.2/1965
15452070/462006-15/720088.8/1988
16452269/531941-7/1220084.8/1992
17442176/591980-9/1019644.6/1975
18442269/451979-14/1319094.9/1973
19452169/501979-17/1019243.7/2012
20452270/471954-16/3192415.7/2006
21442266/441982-20/8199010.3/2006
22442371/471982-24/0199014.6/2011
23442271/541955-13/219905.9/2009
24462270/621955-18/-2192418.0/1982
25452168/472005-10/1219836.7/2012
26442070/441947-6/1019167.0/1988
27442074/441980-10/8191612.6/1987
28462167/441980-8/1519249.0/1979
29452269/441965-10/11198312.5/2006
30442171/491980-11/1119906.2/2010
31421866/481904-18/619238.0/1994
Back to top

See the Boulder weather log for more details

NOTE! Records and daily data are sometimes from different sources and may not agree. I attempt to fix discrepancies when possible.

[Pages are for curiosity only; there are no guarantees that the data is correct]