PlainClimate
NOAA 1991–2020 normals 43°F annual avg Public-domain federal data

Brookings, SD Climate

Annual temperature, rainfall, and a comfort score, sourced from NOAA NCEI's 1991–2020 normals →

43°F
Avg annual temp
49/100
Comfort score
25.2"
Annual precip
148d
Growing season

30-year climate normals from 1 weather station (1991-2020).

The climate verdict for Brookings

Brookings, South Dakota averages 43°F a year and scores 49/100 on the comfort index - moderate, milder than 18% of U.S. cities.

43°F
annual average temperature (NOAA normal)
49/100
comfort score, milder than 18% of U.S. cities
25.2"
annual precipitation · 36" snow
148 days
frost-free growing season

Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.

Avg Temperature

43°F (6°C)

Avg High

54°F

Avg Low

33°F

Annual Precip

25.2"

Annual Snow

35.8"

Comfort Score

49/100

Moderate

Climate Comfort Score

49/100

Moderate

Avg Annual Temperature

43°F

30-year mean (NOAA NCEI)

Annual Precipitation

25.2"

Plus 35.8" of snow

Comfort score vs national 100-point ceiling (Brookings) 49.0%
National median (63)

PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Brookings area.

How Brookings compares to every U.S. city

Brookings's comfort score vs. all U.S. cities

PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals

49 Top 82% higher than 18% of 6,915 US cities

0–10: 0 US cities (0%). Below this entry. 10–20: 0 US cities (0%). Below this entry. 20–30: 58 US cities (1%). Below this entry. 30–40: 439 US cities (6%). Below this entry. 40–50: 1,302 US cities (19%). This entry sits in this band. 50–60: 1,433 US cities (21%). Above this entry. 60–70: 1,357 US cities (20%). Above this entry. 70–80: 1,102 US cities (16%). Above this entry. 80–90: 778 US cities (11%). Above this entry. 90–100: 420 US cities (6%). Above this entry. This city 0 100 every U.S. city, bucketed by value

Each bar is a band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020

Warming context for Brookings

Methodology

The chart below traces how the U.S. land temperature anomaly has moved against the global mean since 1900. For Brookings, the NOAA 1991-2020 normal captures average conditions across that spread - notably, the most recent decade runs warmer than the 30-year mean itself.

Warming context, U.S. vs global, with Paris reference lines Anomaly chart from 1900 to 2024. Local series shows warming of 0.11 °C per decade versus a global rate of 0.11 °C per decade (ratio 1.00). Paris Agreement thresholds at 1.5 and 2.0 °C are dashed. -1.0°C -0.5°C +0.0°C +0.5°C +1.0°C +1.5°C +2.0°C +2.5°C Paris 1.5°C Paris 2.0°C 1900192019401960198020002020
  • United States land mean (NOAA NCEI) +0.11 °C/decade
  • Global anomaly (NASA GISTEMP) +0.11 °C/decade
  • Paris Agreement thresholds 1.5°C / 2.0°C
Sources: NOAA NCEI, NASA GISTEMP. Paris thresholds per IPCC AR6 WG1.

Monthly Temperatures

Average daily high and low temperatures by month

Month Avg High Avg Low Mean
January 22°F (-5°C) 4°F (-16°C) 13°F (-11°C)
February 27°F (-3°C) 7°F (-14°C) 17°F (-8°C)
March 39°F (4°C) 20°F (-7°C) 30°F (-1°C)
April 54°F (12°C) 32°F (0°C) 43°F (6°C)
May 67°F (19°C) 45°F (7°C) 56°F (13°C)
June 77°F (25°C) 56°F (13°C) 67°F (19°C)
July 81°F (27°C) 60°F (16°C) 71°F (22°C)
August 79°F (26°C) 57°F (14°C) 68°F (20°C)
September 72°F (22°C) 48°F (9°C) 60°F (16°C)
October 58°F (14°C) 34°F (1°C) 46°F (8°C)
November 41°F (5°C) 22°F (-6°C) 31°F (0°C)
December 28°F (-2°C) 10°F (-12°C) 19°F (-7°C)

Monthly Precipitation

Average monthly rainfall and snowfall

January 0.4"

Snow: 5.5"

6.0 days with precipitation

February 0.5"

Snow: 7.1"

5.6 days with precipitation

March 1.1"

Snow: 6.4"

6.8 days with precipitation

April 2.2"

Snow: 4.1"

9.6 days with precipitation

May 3.5"

Snow: 0.1"

12.5 days with precipitation

June 4.3"

12.0 days with precipitation

July 3.6"

10.0 days with precipitation

August 3.2"

9.1 days with precipitation

September 3.1"

8.4 days with precipitation

October 2.0"

Snow: 1.1"

7.7 days with precipitation

November 0.8"

Snow: 4.7"

4.9 days with precipitation

December 0.6"

Snow: 6.8"

6.0 days with precipitation

Frost Dates & Growing Season

First Fall Freeze

October 1

50% probability date

Last Spring Freeze

May 6

50% probability date

Growing Season

148 days

Heating & Cooling Degree Days

Annual totals indicate energy demand for heating and cooling

Heating Degree Days

8,378

Higher = more heating needed

Cooling Degree Days

524

Higher = more cooling needed

Warmest Month

July

Coldest Month

January

What Brookings's climate means for you

Brookings runs 43°F a year - peaking in July, coldest in January.

  • Gardeners get about 148 frost-free days, with the last spring freeze near May 6 - plan the planting calendar around it, not the regional average.
  • Energy bills track 8,378 heating and 524 cooling degree days a year, higher means the furnace or AC runs more.
  • Comparing places to live? Line this city up against nearby cities and the national rankings. See rankings

These are 30-year NOAA normals (1991–2020) - the typical year, not a forecast for any specific season.

Climate Guides

Climate Insight: Brookings, SD

Based on station USC00391076 feeding NOAA's 1991–2020 climate normals, Brookings, South Dakota averages 43°F a year, ranging from a mean daily high of 54°F to a mean daily low of 33°F. July is typically the warmest month of the year, while January is the coldest. Because these figures are thirty-year averages rather than any single year's readings, they describe the typical month, not a forecast for it.

Brookings averages 25.2 inches of precipitation a year, with 35.8 inches typically falling as snow, and that matters as much to daily life here as temperature does. The frost-free season averages 148 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 6 and the first fall freeze near October 1. As for energy demand, 8,378 heating degree days and 524 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Brookings scores 49/100 (Moderate), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above are the practical planning tool: mild highs and lows land in the shoulder seasons, July-driven heat peaks in summer, and January-driven cold sets in over deep winter. These are thirty-year averages, not a forecast - any single year can run warmer, wetter, drier, or cooler than the normal.

Frequently Asked Questions

What is the average temperature in Brookings, SD?
The average annual temperature in Brookings, South Dakota is 43°F. The warmest month averages 81°F (27°C) and the coldest averages 4°F (-16°C).
How much rain does Brookings get?
Brookings receives 25.2 inches of precipitation annually, including 35.8 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Brookings?
Brookings has a climate comfort score of 49/100 (Moderate), milder than 18% of U.S. cities in the PlainClimate database.
When is the growing season in Brookings?
Brookings has approximately 148 frost-free days per year, with the last spring freeze around May 6 and the first fall freeze around October 1.
How much energy does heating and cooling require in Brookings?
Brookings has 8,378 heating degree days and 524 cooling degree days annually, a heating-dominated climate. See our <a href="/guides/reading-weather-data/" class="underline hover:text-brand-600">guide to reading weather data</a> for what these figures mean.
Where does this Brookings climate data come from?
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00391076 near Brookings.

Data Sources

Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00391076. For informational purposes only.

Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate Editorial

Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. This page draws directly on NOAA 1991-2020 U.S. Climate Normals data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.