Climate Comfort Score
64/100
Good
NOAA 1991–2020 normals 48°F annual avg 2 stations
Stillwater, MN Climate
Average temperature, precipitation, and a comfort score, drawn from NOAA NCEI 1991–2020 normals →
- 48°F
- Avg annual temp
- 64/100
- Comfort score
- 35.1"
- Annual precip
- 180d
- Growing season
30-year climate normals from 2 weather stations (1991-2020).
The climate verdict for Stillwater
Stillwater, Minnesota averages 48°F a year and scores 64/100 on the comfort index - good, milder than 51% of U.S. cities.
- 48°F
- annual average temperature (NOAA normal)
- 64/100
- comfort score, milder than 51% of U.S. cities
- 35.1"
- yearly precipitation total
- 180 days
- frost-free days per growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
48°F (9°C)
Avg High
58°F
Avg Low
39°F
Annual Precip
35.1"
Comfort Score
64/100
Good
Avg Annual Temperature
48°F
30-year mean (NOAA NCEI)
Annual Precipitation
35.1"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Stillwater) 64.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Stillwater area.
How Stillwater compares to every U.S. city
Stillwater's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
64 Top 49% higher than 51% of 6,915 US cities
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 Stillwater
MethodologyZooming out from Stillwater's own normal, the chart below shows how the U.S. land temperature anomaly has tracked the global mean since 1900 - the most recent decade sits warmer than the 30-year mean shown here.
- 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
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 27°F (-3°C) | 9°F (-13°C) | 18°F (-8°C) | 1.0" | 30.4 | 0.0 |
| February | 32°F (0°C) | 14°F (-10°C) | 23°F (-5°C) | 0.9" | 26.1 | 0.0 |
| March | 45°F (7°C) | 25°F (-4°C) | 35°F (2°C) | 1.5" | 24.7 | 0.0 |
| April | 60°F (15°C) | 38°F (3°C) | 49°F (9°C) | 3.1" | 9.7 | 0.3 |
| May | 73°F (23°C) | 50°F (10°C) | 61°F (16°C) | 4.2" | 0.6 | 0.7 |
| June | 81°F (27°C) | 60°F (15°C) | 71°F (21°C) | 5.4" | 0.0 | 3.6 |
| July | 85°F (30°C) | 64°F (18°C) | 75°F (24°C) | 4.5" | 0.0 | 7.5 |
| August | 84°F (29°C) | 62°F (17°C) | 73°F (23°C) | 5.3" | 0.0 | 5.0 |
| September | 76°F (24°C) | 55°F (13°C) | 65°F (19°C) | 3.2" | 0.3 | 1.1 |
| October | 62°F (16°C) | 42°F (5°C) | 52°F (11°C) | 3.2" | 5.1 | 0.1 |
| November | 45°F (7°C) | 28°F (-2°C) | 37°F (3°C) | 1.6" | 21.1 | 0.0 |
| December | 32°F (0°C) | 16°F (-9°C) | 24°F (-5°C) | 1.1" | 29.1 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January 1.0"
8.3 days with precipitation
February 0.9"
6.2 days with precipitation
March 1.5"
8.0 days with precipitation
April 3.1"
9.9 days with precipitation
May 4.2"
12.4 days with precipitation
June 5.4"
12.9 days with precipitation
July 4.5"
10.8 days with precipitation
August 5.3"
9.1 days with precipitation
September 3.2"
9.4 days with precipitation
October 3.2"
8.7 days with precipitation
November 1.6"
7.2 days with precipitation
December 1.1"
7.6 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 19
50% probability date
Last Spring Freeze
April 22
50% probability date
Growing Season
180 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,928
Higher = more heating needed
Cooling Degree Days
927
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Stillwater's climate means for you
Stillwater runs 48°F a year - peaking in July, coldest in January.
- Gardeners get about 180 frost-free days, with the last spring freeze near April 22 - plan the planting calendar around it, not the regional average.
- Energy bills track 6,928 heating and 927 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: Stillwater, MN
In Stillwater, Minnesota, the NOAA 1991–2020 climate normals put the annual average temperature at 48°F, ranging from a mean daily high of 58°F to a mean daily low of 39°F. July is typically the warmest month of the year, while January is the coldest. As thirty-year averages computed from 2 weather stations, these numbers smooth out year-to-year noise into a working baseline for a typical month.
Beyond temperature, Stillwater averages 35.1 inches of precipitation annually, predominantly as rainfall - a real factor for anyone planning to live, garden, or travel here. The frost-free season averages 180 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 22 and the first fall freeze near October 19. Turning to energy use, 6,928 heating degree days and 927 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Stillwater scores 64/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Use the monthly tables above to plan around specific windows, shoulder seasons for mild highs and lows, peak summer for July-driven heat, or deep winter for January-driven cold. All figures here are thirty-year averages: any single year may run warmer, wetter, drier, or cooler than the normal, so treat them as planning guidance rather than forecasts.
Frequently Asked Questions
What is the average temperature in Stillwater, MN? ▼
The average annual temperature in Stillwater, Minnesota is 48°F. The warmest month averages 85°F (30°C) and the coldest averages 9°F (-13°C).
How much rain does Stillwater get? ▼
Stillwater receives 35.1 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Stillwater? ▼
Stillwater has a climate comfort score of 64/100 (Good), milder than 51% of U.S. cities in the PlainClimate database.
When is the growing season in Stillwater? ▼
Stillwater has approximately 180 frost-free days per year, with the last spring freeze around April 22 and the first fall freeze around October 19.
How much energy does heating and cooling require in Stillwater? ▼
Stillwater has 6,928 heating degree days and 927 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 Stillwater climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from 2 weather stations near Stillwater.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00218037. For informational purposes only.
Read our methodology - how this data is sourced, computed, and verified.
Related
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.