Brookings climate — normals and trends
Brookings (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 6.7 °C and it receives 680 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 (22.3 °C on average) and the coldest is January (-10.5 °C). Rainfall peaks in June.
Brookings averages 160 frost days, 23 hot days (≥ 30 °C) and 91 rainy days per year.
Brookings has warmed by +1.9 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The number of frost days there went from about 165 to 155 per year over the period.
The hottest day of the period reached 39.4 °C (on 13 August 1965) and the coldest -36.7 °C (on 2 February 1996).
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
BrookingsSouth Dakota
- coords
- 44.31°, -96.80°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
6.7°C
Average daily high
12.0°C
Average daily low
1.6°C
Annual rainfall
680mm
Sunshine / day
9.2h
Mean relative humidity
71%
Average peak wind
23.9km/h
Seasonal range
32.8°C
Frost days (< 0 °C)
160 d/yr
Hot days (≥ 30 °C)
23 d/yr
Rainy days (≥ 1 mm)
91 d/yr
Annual snowfall
84.2 cm
Average feels-like high
9.0 °C
Average feels-like low
-2.3 °C
Average peak gust
42.3 km/h
Tropical nights (≥ 20 °C)
11 d/yr
Solar radiation
15.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.27 · p = < 0.001
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
39.4 °C
13 August 1965
Coldest day
-36.7 °C
2 February 1996
Wettest day
129 mm
16 August 2017
Windiest day
76.4 km/h
9 November 1977
Strongest gust
109.8 km/h
10 October 1949
Hottest feels-like
42.9 °C
11 July 1954
Coldest feels-like
-42.9 °C
2 February 1996
Snowiest day
34.8 cm
9 November 1977
Sunniest day
15.0 h
30 May 1940
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -3.5 °C | +2.2 °C | 3 mm | -17 mm |
| Feb | -3.9 °C | -0.7 °C | 8 mm | -13 mm |
| Mar | 10.9 °C | +7.5 °C | 46 mm | -0 mm |
| Apr | 14.1 °C | +1.5 °C | 82 mm | +11 mm |
| May | 21.0 °C | +1.4 °C | 79 mm | -10 mm |
| Jun | 26.2 °C | +1.2 °C | 191 mm | +87 mm |
| Jul | 27.7 °C | -0.1 °C | 107 mm | +35 mm |
| Aug | 25.5 °C | -1.1 °C | 113 mm | +32 mm |
| Sep | 24.8 °C | +3.0 °C | 31 mm | -34 mm |
| Oct | 17.7 °C | +2.9 °C | 35 mm | -15 mm |
| Nov | 7.0 °C | +2.3 °C | 41 mm | +6 mm |
| Dec | -0.3 °C | +2.5 °C | 19 mm | -5 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Brookings?
Brookings has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 6.7 °C and it receives 680 mm of precipitation per year.
What is the hottest day ever recorded in Brookings?
The hottest day measured in Brookings between 1940 and 2025 was 13 August 1965, reaching 39.4 °C.
What is the coldest day in Brookings?
The coldest day measured in Brookings between 1940 and 2025 was 2 February 1996, at -36.7 °C.
Does it snow in Brookings?
Yes. Brookings gets on average 84.2 cm of snow per year and has around 160 frost days.
Has the climate of Brookings warmed?
Yes: Brookings warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Brookings?
The wettest day measured in Brookings between 1940 and 2025 was 16 August 2017, with 129 mm of rain in 24 hours.
What was the windiest day in Brookings?
The windiest day measured in Brookings between 1940 and 2025 was 9 November 1977, with winds reaching 76.4 km/h.
What is the warmest month in Brookings?
The warmest month in Brookings is July (22.3 °C on average); the coldest is January (-10.5 °C).
How much does it rain in Brookings?
Brookings receives on average 680 mm of precipitation per year, spread over about 91 rainy days.
Is it sunny in Brookings?
Brookings gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.
What is the biggest single-day snowfall in Brookings?
The heaviest 24-hour snowfall measured in Brookings between 1940 and 2025 was 9 November 1977, with 34.8 cm.
Are there tropical nights in Brookings?
Yes: Brookings has on average 11 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Brookings?
In Brookings, between 1940 and 2025, the highest apparent temperature reached 42.9 °C on 11 July 1954, and the lowest was -42.9 °C on 2 February 1996.
Compare Brookings with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Brookings