Bloomington climate — normals and trends

Q: What is the climate of Bloomington?

Bloomington has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 12.0 °C and it receives 1,079 mm of precipitation per year.

Q: What is the hottest day ever recorded in Bloomington?

The hottest day measured in Bloomington between 1940 and 2025 was 20 July 1954, reaching 40.0 °C.

Q: What is the coldest day in Bloomington?

The coldest day measured in Bloomington between 1940 and 2025 was 19 January 1994, at -31.3 °C.

Q: Does it snow in Bloomington?

Yes. Bloomington gets on average 46.2 cm of snow per year and has around 95 frost days.

Q: Has the climate of Bloomington warmed?

Yes: Bloomington warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Bloomington?

The wettest day measured in Bloomington between 1940 and 2025 was 9 March 1964, with 103 mm of rain in 24 hours.

Q: What was the windiest day in Bloomington?

The windiest day measured in Bloomington between 1940 and 2025 was 15 December 1987, with winds reaching 40.9 km/h.

Q: What is the warmest month in Bloomington?

The warmest month in Bloomington is July (24.3 °C on average); the coldest is January (-1.6 °C).

Q: How much does it rain in Bloomington?

Bloomington receives on average 1,079 mm of precipitation per year, spread over about 122 rainy days.

Q: Is it sunny in Bloomington?

Bloomington gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.

Bloomington (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 12.0 °C and it receives 1,079 mm of precipitation per year.

These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.

The warmest month is July (24.3 °C on average) and the coldest is January (-1.6 °C). Rainfall peaks in April.

Bloomington averages 95 frost days, 42 hot days (≥ 30 °C) and 122 rainy days per year.

Bloomington has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.

The number of frost days there went from about 107 to 83 per year over the period.

The hottest day of the period reached 40.0 °C (on 20 July 1954) and the coldest -31.3 °C (on 19 January 1994).

Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.

Climate normals · ERA5

BloomingtonIndiana

coords: 39.17°, -86.53°
period: 1940–2025 · 86 yrs

DfaHot-summer humid continentalWarmest monthJulyColdest monthJanuaryWettest monthAprilDriest monthSeptember

Mean daily temperature

12.0°C

Average daily high

17.1°C

Average daily low

7.5°C

Annual rainfall

1,079mm

Sunshine / day

8.8h

Mean relative humidity

71%

Average peak wind

15.4km/h

Seasonal range

25.9°C

Frost days (< 0 °C)

95 d/yr

Hot days (≥ 30 °C)

42 d/yr

Rainy days (≥ 1 mm)

122 d/yr

Annual snowfall

46.2 cm

Average feels-like high

16.0 °C

Average feels-like low

5.3 °C

Average peak gust

36.6 km/h

Tropical nights (≥ 20 °C)

41 d/yr

Solar radiation

15.1 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.7 °C

since 1940

+0.2 °C per decade · r² = 0.33 · p = < 0.001

19402025

Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).

A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.

Records for the period

Hottest day

40.0 °C

20 July 1954

Coldest day

-31.3 °C

19 January 1994

Wettest day

103 mm

9 March 1964

Windiest day

40.9 km/h

15 December 1987

Strongest gust

118.1 km/h

14 March 2019

Hottest feels-like

44.3 °C

29 June 2012

Coldest feels-like

-37.7 °C

20 January 1985

Snowiest day

33.5 cm

19 March 1996

Sunniest day

14.4 h

5 June 2009

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	34.5 °C5 July 2025	-23.6 °C15 December 2025	12.8 °C	1,200 mm	57	89
2024	34.9 °C17 June 2024	-19.7 °C21 January 2024	13.8 °C	1,184 mm	50	67
2023	34.5 °C28 July 2023	-10.3 °C1 February 2023	13.7 °C	1,062 mm	37	59
2022	35.9 °C5 July 2022	-22.8 °C23 December 2022	12.6 °C	1,216 mm	46	95
2021	35.2 °C24 August 2021	-17.3 °C17 February 2021	13.3 °C	1,215 mm	48	87
2020	34.4 °C5 July 2020	-15.0 °C14 February 2020	13.2 °C	1,100 mm	50	69
2019	33.6 °C30 September 2019	-21.6 °C30 January 2019	12.7 °C	1,399 mm	51	94
2018	34.5 °C28 May 2018	-22.8 °C2 January 2018	12.7 °C	1,491 mm	59	98
2017	34.3 °C21 July 2017	-17.6 °C27 December 2017	13.5 °C	1,114 mm	42	75
2016	33.9 °C23 June 2016	-17.3 °C13 January 2016	13.4 °C	1,168 mm	44	80
2015	33.2 °C6 September 2015	-25.3 °C20 February 2015	12.7 °C	1,211 mm	25	78
2014	33.8 °C19 June 2014	-24.1 °C7 January 2014	11.1 °C	1,008 mm	35	106
2013	35.5 °C31 August 2013	-20.9 °C12 December 2013	11.8 °C	1,122 mm	41	108
2012	39.4 °C28 June 2012	-11.6 °C15 January 2012	14.2 °C	788 mm	65	76
2011	38.2 °C21 July 2011	-17.4 °C22 January 2011	13.1 °C	1,603 mm	59	77
2010	37.9 °C4 August 2010	-16.9 °C7 February 2010	12.9 °C	823 mm	77	92
2009	33.3 °C25 June 2009	-21.6 °C5 February 2009	12.1 °C	1,068 mm	17	84
2008	33.7 °C23 August 2008	-17.1 °C25 January 2008	11.9 °C	1,227 mm	32	102
2007	36.6 °C9 August 2007	-20.1 °C16 February 2007	13.5 °C	857 mm	74	96
2006	34.0 °C19 July 2006	-15.5 °C19 February 2006	12.9 °C	1,370 mm	37	78
2005	34.9 °C12 August 2005	-15.7 °C18 January 2005	12.7 °C	1,063 mm	54	93
2004	34.1 °C22 July 2004	-26.6 °C31 January 2004	12.6 °C	969 mm	29	87
2003	32.6 °C4 July 2003	-18.5 °C27 January 2003	11.5 °C	1,224 mm	19	99
2002	36.2 °C4 August 2002	-15.3 °C4 March 2002	12.9 °C	987 mm	64	95
2001	33.5 °C23 July 2001	-14.8 °C3 January 2001	12.9 °C	982 mm	39	82
2000	33.6 °C9 August 2000	-21.6 °C25 December 2000	11.8 °C	1,109 mm	22	107
1999	39.0 °C30 July 1999	-26.3 °C5 January 1999	13.0 °C	933 mm	60	83
1998	35.1 °C6 September 1998	-13.4 °C12 March 1998	13.6 °C	1,165 mm	35	67
1997	36.2 °C27 July 1997	-23.9 °C13 January 1997	11.3 °C	1,093 mm	32	93
1996	33.3 °C30 June 1996	-22.3 °C4 February 1996	11.0 °C	1,598 mm	31	112
1995	35.6 °C14 July 1995	-21.3 °C6 February 1995	12.1 °C	1,158 mm	46	102
1994	36.9 °C18 June 1994	-31.3 °C19 January 1994	12.5 °C	886 mm	56	82
1993	34.5 °C28 July 1993	-21.5 °C18 February 1993	11.4 °C	1,368 mm	32	96
1992	33.0 °C17 June 1992	-20.5 °C16 January 1992	11.8 °C	967 mm	13	83
1991	37.1 °C2 August 1991	-14.8 °C22 January 1991	13.2 °C	992 mm	67	88
1990	34.7 °C19 August 1990	-16.5 °C24 December 1990	13.0 °C	1,388 mm	35	73
1989	35.7 °C7 July 1989	-30.9 °C22 December 1989	11.5 °C	1,098 mm	38	99
1988	39.3 °C25 June 1988	-19.9 °C13 February 1988	12.0 °C	1,010 mm	65	102
1987	36.0 °C2 August 1987	-15.7 °C24 January 1987	12.9 °C	831 mm	60	86
1986	35.0 °C25 July 1986	-16.5 °C27 January 1986	12.5 °C	1,147 mm	42	84
1985	34.8 °C14 July 1985	-30.5 °C20 January 1985	11.7 °C	1,206 mm	34	91
1984	35.8 °C10 July 1984	-24.4 °C21 January 1984	12.0 °C	1,143 mm	51	90
1983	39.6 °C22 July 1983	-25.7 °C30 December 1983	12.2 °C	1,202 mm	71	93
1982	33.3 °C3 August 1982	-29.6 °C17 January 1982	11.7 °C	1,294 mm	21	92
1981	33.9 °C13 July 1981	-24.7 °C20 December 1981	11.5 °C	1,210 mm	21	98
1980	38.7 °C15 July 1980	-19.8 °C17 February 1980	11.6 °C	1,157 mm	60	100
1979	32.6 °C9 August 1979	-26.8 °C15 January 1979	10.7 °C	1,298 mm	16	107
1978	36.6 °C27 June 1978	-20.2 °C5 March 1978	10.9 °C	1,014 mm	51	101
1977	34.7 °C19 July 1977	-28.1 °C17 January 1977	11.8 °C	1,155 mm	44	92
1976	35.7 °C14 July 1976	-20.1 °C8 January 1976	11.3 °C	778 mm	34	110
1975	33.0 °C20 June 1975	-16.6 °C9 February 1975	12.4 °C	1,074 mm	47	95
1974	33.8 °C14 July 1974	-17.2 °C25 March 1974	11.8 °C	1,232 mm	25	90
1973	34.2 °C28 August 1973	-18.6 °C22 December 1973	12.8 °C	1,242 mm	46	84
1972	33.9 °C20 July 1972	-25.1 °C16 January 1972	11.1 °C	1,031 mm	29	103
1971	36.9 °C27 June 1971	-20.6 °C2 February 1971	12.1 °C	817 mm	32	101
1970	36.9 °C2 July 1970	-23.9 °C22 January 1970	11.8 °C	905 mm	42	94
1969	36.0 °C5 July 1969	-17.5 °C4 January 1969	11.3 °C	966 mm	39	114
1968	33.4 °C21 August 1968	-24.8 °C8 January 1968	11.4 °C	1,006 mm	42	100
1967	33.5 °C15 June 1967	-19.7 °C25 February 1967	11.3 °C	1,076 mm	24	94
1966	36.9 °C10 July 1966	-25.2 °C30 January 1966	11.3 °C	831 mm	53	101
1965	36.3 °C24 July 1965	-22.7 °C17 January 1965	12.0 °C	803 mm	29	103
1964	38.2 °C3 August 1964	-18.1 °C27 February 1964	12.2 °C	973 mm	58	108
1963	34.2 °C3 August 1963	-26.5 °C23 January 1963	10.7 °C	786 mm	24	104
1962	37.9 °C20 August 1962	-24.7 °C11 January 1962	11.4 °C	808 mm	45	108
1961	32.6 °C30 June 1961	-20.0 °C28 January 1961	11.4 °C	1,090 mm	33	100
1960	35.6 °C8 September 1960	-25.7 °C23 December 1960	11.0 °C	803 mm	37	118
1959	34.5 °C8 July 1959	-20.4 °C5 January 1959	12.3 °C	1,051 mm	58	105
1958	32.7 °C30 August 1958	-24.2 °C15 December 1958	10.7 °C	941 mm	21	109
1957	33.4 °C30 August 1957	-21.8 °C17 January 1957	12.1 °C	1,257 mm	36	92
1956	35.1 °C5 August 1956	-18.8 °C26 January 1956	12.2 °C	936 mm	32	99
1955	34.8 °C9 September 1955	-20.6 °C29 January 1955	12.2 °C	1,010 mm	53	107
1954	40.0 °C20 July 1954	-15.3 °C12 January 1954	13.0 °C	757 mm	71	97
1953	38.0 °C1 September 1953	-20.3 °C18 December 1953	13.0 °C	758 mm	71	86
1952	37.4 °C29 June 1952	-15.3 °C29 January 1952	12.5 °C	946 mm	67	92
1951	35.5 °C31 August 1951	-28.2 °C2 February 1951	11.3 °C	1,228 mm	38	100
1950	33.1 °C26 June 1950	-20.2 °C18 December 1950	11.1 °C	1,408 mm	15	113
1949	34.0 °C4 July 1949	-16.1 °C30 January 1949	12.5 °C	1,217 mm	31	89
1948	35.7 °C26 August 1948	-20.6 °C29 January 1948	11.6 °C	1,349 mm	35	97
1947	37.6 °C6 August 1947	-17.6 °C5 February 1947	10.9 °C	918 mm	39	118
1946	33.8 °C19 July 1946	-19.1 °C22 January 1946	12.6 °C	1,082 mm	20	77
1945	34.8 °C24 July 1945	-24.0 °C1 February 1945	11.3 °C	1,297 mm	31	99
1944	36.2 °C11 July 1944	-15.1 °C9 January 1944	11.8 °C	880 mm	40	105
1943	36.9 °C25 August 1943	-18.6 °C30 December 1943	10.9 °C	734 mm	44	120
1942	35.4 °C2 August 1942	-21.2 °C8 January 1942	11.0 °C	975 mm	18	113
1941	35.4 °C11 August 1941	-16.8 °C19 February 1941	11.4 °C	934 mm	31	114
1940	35.8 °C3 August 1940	-26.2 °C19 January 1940	10.0 °C	1,048 mm	36	118

Normals computed over complete calendar years 1940–2025.

A specific year

Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?

Year

Across the whole year

Average daily high

17.9 °C

+0.8 °C

Hot days (≥ 30 °C)

57 d/yr

+15

Frost days (< 0 °C)

89 d/yr

-6

Annual rainfall

1200 mm

+121 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	0.2 °C	-2.5 °C	54 mm	-25 mm
Feb	5.1 °C	-0.1 °C	102 mm	+26 mm
Mar	15.6 °C	+4.7 °C	134 mm	+26 mm
Apr	18.8 °C	+1.3 °C	191 mm	+75 mm
May	21.8 °C	-0.8 °C	112 mm	-3 mm
Jun	28.7 °C	+1.1 °C	114 mm	+13 mm
Jul	30.8 °C	+1.3 °C	206 mm	+117 mm
Aug	28.3 °C	-0.6 °C	32 mm	-47 mm
Sep	27.6 °C	+2.3 °C	72 mm	+1 mm
Oct	20.5 °C	+1.6 °C	54 mm	-19 mm
Nov	11.7 °C	+0.7 °C	72 mm	-18 mm
Dec	5.1 °C	+0.1 °C	57 mm	-25 mm

The year's extremes

Hottest day

34.5 °C

5 Jul 2025

Coldest day

-23.6 °C

15 Dec 2025

Wettest day

62.0 mm

5 Apr 2025

Windiest day

32.9 km/h

2 Apr 2025

Strongest gust

92.2 km/h

2 Apr 2025

Hottest feels-like

39.6 °C

29 Jul 2025

Coldest feels-like

-28.8 °C

15 Dec 2025

Snowiest day

9.0 cm

5 Jan 2025

Sunniest day

14.4 h

11 Jun 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Bloomington?

Bloomington has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 12.0 °C and it receives 1,079 mm of precipitation per year.

What is the hottest day ever recorded in Bloomington?

The hottest day measured in Bloomington between 1940 and 2025 was 20 July 1954, reaching 40.0 °C.

What is the coldest day in Bloomington?

The coldest day measured in Bloomington between 1940 and 2025 was 19 January 1994, at -31.3 °C.

Does it snow in Bloomington?

Yes. Bloomington gets on average 46.2 cm of snow per year and has around 95 frost days.

Has the climate of Bloomington warmed?

Yes: Bloomington warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Bloomington?

The wettest day measured in Bloomington between 1940 and 2025 was 9 March 1964, with 103 mm of rain in 24 hours.

What was the windiest day in Bloomington?

The windiest day measured in Bloomington between 1940 and 2025 was 15 December 1987, with winds reaching 40.9 km/h.

What is the warmest month in Bloomington?

The warmest month in Bloomington is July (24.3 °C on average); the coldest is January (-1.6 °C).

How much does it rain in Bloomington?

Bloomington receives on average 1,079 mm of precipitation per year, spread over about 122 rainy days.

Is it sunny in Bloomington?

Bloomington gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.

What is the biggest single-day snowfall in Bloomington?

The heaviest 24-hour snowfall measured in Bloomington between 1940 and 2025 was 19 March 1996, with 33.5 cm.

Are there tropical nights in Bloomington?

Yes: Bloomington has on average 41 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Bloomington?

In Bloomington, between 1940 and 2025, the highest apparent temperature reached 44.3 °C on 29 June 2012, and the lowest was -37.7 °C on 20 January 1985.

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