Climate Comfort Score
88/100
Excellent
NOAA 1991–2020 normals 60°F annual avg 3 stations
Stillwater, OK Climate
Explore average temperature, rainfall, and comfort score sourced from NOAA NCEI's 1991–2020 climate normals →
- 60°F
- Avg annual temp
- 88/100
- Comfort score
- 36.0"
- Annual precip
- 208d
- Growing season
30-year climate normals from 3 weather stations (1991-2020).
The climate verdict for Stillwater
Stillwater, Oklahoma averages 60°F a year and scores 88/100 on the comfort index - excellent, milder than 92% of U.S. cities.
- 60°F
- yearly average temperature, NOAA normal
- 88/100
- comfort score, milder than 92% of U.S. cities
- 36.0"
- precipitation, annual total
- 208 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
60°F (16°C)
Avg High
72°F
Avg Low
49°F
Annual Precip
36.0"
Comfort Score
88/100
Excellent
Avg Annual Temperature
60°F
30-year mean (NOAA NCEI)
Annual Precipitation
36.0"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Stillwater) 88.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Excellent 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
88 Top 8% higher than 92% 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 | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 49°F (10°C) | 26°F (-4°C) | 37°F (3°C) | 1.3" | N/A | 24.6 | 0.0 |
| February | 54°F (12°C) | 30°F (-1°C) | 42°F (5°C) | 1.6" | N/A | 19.2 | 0.0 |
| March | 63°F (17°C) | 38°F (4°C) | 51°F (10°C) | 2.8" | N/A | 8.7 | 0.2 |
| April | 72°F (22°C) | 47°F (8°C) | 60°F (15°C) | 4.2" | N/A | 2.2 | 1.1 |
| May | 79°F (26°C) | 58°F (14°C) | 69°F (20°C) | 4.7" | N/A | 0.1 | 4.2 |
| June | 88°F (31°C) | 67°F (19°C) | 78°F (25°C) | 4.6" | N/A | 0.0 | 15.3 |
| July | 94°F (34°C) | 71°F (22°C) | 83°F (28°C) | 3.4" | N/A | 0.0 | 23.5 |
| August | 93°F (34°C) | 70°F (21°C) | 81°F (27°C) | 3.7" | N/A | 0.0 | 21.2 |
| September | 85°F (29°C) | 61°F (16°C) | 73°F (23°C) | 2.9" | N/A | 0.0 | 9.6 |
| October | 73°F (23°C) | 49°F (9°C) | 61°F (16°C) | 2.9" | N/A | 1.5 | 1.2 |
| November | 61°F (16°C) | 37°F (3°C) | 49°F (9°C) | 2.3" | N/A | 10.3 | 0.0 |
| December | 51°F (10°C) | 29°F (-2°C) | 40°F (4°C) | 1.7" | N/A | 22.0 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 1.3"
5.8 days with precipitation
February 1.6"
7.5 days with precipitation
March 2.8"
7.4 days with precipitation
April 4.2"
9.3 days with precipitation
May 4.7"
11.8 days with precipitation
June 4.6"
9.6 days with precipitation
July 3.4"
7.4 days with precipitation
August 3.7"
8.9 days with precipitation
September 2.9"
7.1 days with precipitation
October 2.9"
8.2 days with precipitation
November 2.3"
6.3 days with precipitation
December 1.7"
6.1 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 30
50% probability date
Last Spring Freeze
April 5
50% probability date
Growing Season
208 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
3,711
Higher = more heating needed
Cooling Degree Days
1,980
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Stillwater's climate means for you
Stillwater runs 60°F a year - peaking in July, coldest in January.
- Gardeners get about 208 frost-free days, with the last spring freeze near April 5 - plan the planting calendar around it, not the regional average.
- Energy bills track 3,711 heating and 1,980 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, OK
In Stillwater, Oklahoma, the NOAA 1991–2020 climate normals put the annual average temperature at 60°F, ranging from a mean daily high of 72°F to a mean daily low of 49°F. July is typically the warmest month of the year, while January is the coldest. As thirty-year averages computed from 3 weather stations, these numbers smooth out year-to-year noise into a working baseline for a typical month.
Stillwater averages 36.0 inches of precipitation a year, with seasonal snowfall possible, and that matters as much to daily life here as temperature does. The frost-free season averages 208 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 5 and the first fall freeze near October 30. As for energy demand, 3,711 heating degree days and 1,980 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 88/100 (Excellent), 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, OK? ▼
The average annual temperature in Stillwater, Oklahoma is 60°F. The warmest month averages 94°F (34°C) and the coldest averages 26°F (-4°C).
How much rain does Stillwater get? ▼
Stillwater receives 36.0 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 88/100 (Excellent), milder than 92% of U.S. cities in the PlainClimate database.
When is the growing season in Stillwater? ▼
Stillwater has approximately 208 frost-free days per year, with the last spring freeze around April 5 and the first fall freeze around October 30.
How much energy does heating and cooling require in Stillwater? ▼
Stillwater has 3,711 heating degree days and 1,980 cooling degree days annually, a fairly balanced heating/cooling split. 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 3 weather stations near Stillwater.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USW00053926. 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.