Stillwater Rgnl, OK Climate: Temperature & Rain by Month
Annual temperature and rainfall from NOAA NCEI's 1991–2020 normals →; comfort score computed by PlainClimate
30-year climate normals (1991-2020) from Stillwater Rgnl's primary NOAA station, STILLWATER RGNL AP.
The climate verdict for Stillwater Rgnl
Stillwater Rgnl, Oklahoma has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 62°F. It scores 92/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 92% of them.
- 62°F
- average temperature, NOAA 1991-2020 normal
- 92/100
- comfort score, above 92% of station-mapped location scores
- 33.2"
- yearly precipitation total
- 211 days
- growing season, frost-free days
Stillwater Rgnl: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00003965 · Stillwater Rgnl, OK 62°F mean · 33.2" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-MID · SWING-WIDE · COMF-TOP · LOAD-MIX · STN-1 · BOOK-FULL
- TEMP-MILD 62°F
- RANK-UPPER #5,420
- PHOTO-FINISH ≈ Atlanta Peachtr…
- PRCP-MID 33.2"
- SWING-WIDE 45°F
- COMF-TOP 92/100
- LOAD-MIX H/C balanced
- STN-1 USW00003965
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Atlanta Peachtree, GA (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every OK station list.
- Stillwater Rgnl (this station) 62°F
- Hot Clemson Univ, SC 62°F
- Near Atlanta Peachtr…, GA 62°F
- Near Chickasaw Nra, OK 62°F
- Near Clarendon, AR 62°F
Climate Living Index · Stillwater Rgnl
Stillwater Rgnl: 68/100 · grade C
Stillwater Rgnl publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Stillwater Rgnl, not an official NOAA rating. Rankings still use Comfort Score 92/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 33.2 in · 1.8 from 35 in | 92/100 · A |
| Annual temperature balance | 61.5°F · 6.0° from 67.5°F | 81/100 · B |
| Frost-free season | 211 days/year | 72/100 · B |
| Normal heat + freeze calendar | 161 calendar days | 39/100 · F |
Stillwater Rgnl · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Stillwater Rgnl is a temperate Köppen climate: Cfa
Coldest-month mean 38.7°F and warmest-month mean 83.7°F place this station in temperate, no dry season, hot summer climates (Cfa). Class Cfa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: temperate, specifically temperate, no dry season, hot summer.
- Köppen code
- Cfa
- Group
- Temperate
- Warmest month
- 83.7°F
- Coldest month
- 38.7°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · balanced station
Where Stillwater Rgnl sits across the climate record
Three NOAA fields for Stillwater Rgnl's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 21% warmest
- Among 6,861 stations, Stillwater Rgnl sits in the warmer third of annual means.
- Annual precipitation
- 45th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- 59th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Stillwater Rgnl compares across U.S. station-mapped locations
Stillwater Rgnl's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
92 Top 8% score exceeds 92% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). Below this entry.
- 70–80: 650 station-mapped locations (11%). Below this entry.
- 80–90: 921 station-mapped locations (15%). Below this entry.
- 90–100: 564 station-mapped locations (9%). This entry sits in this band.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 51°F (10°C) | 27°F (-3°C) | 39°F (4°C) | 0.9" | 23.9 | 0.0 |
| February | 56°F (13°C) | 31°F (-1°C) | 43°F (6°C) | 1.3" | 18.1 | 0.0 |
| March | 65°F (18°C) | 40°F (4°C) | 52°F (11°C) | 2.2" | 9.1 | 0.3 |
| April | 73°F (23°C) | 49°F (9°C) | 61°F (16°C) | 3.7" | 2.1 | 1.1 |
| May | 81°F (27°C) | 59°F (15°C) | 70°F (21°C) | 4.6" | 0.0 | 4.5 |
| June | 90°F (32°C) | 68°F (20°C) | 79°F (26°C) | 4.5" | 0.0 | 15.6 |
| July | 95°F (35°C) | 72°F (22°C) | 84°F (29°C) | 3.1" | 0.0 | 25.0 |
| August | 95°F (35°C) | 71°F (21°C) | 83°F (28°C) | 3.3" | 0.0 | 23.8 |
| September | 87°F (30°C) | 62°F (17°C) | 74°F (24°C) | 3.1" | 0.0 | 11.3 |
| October | 75°F (24°C) | 49°F (10°C) | 62°F (17°C) | 2.9" | 1.6 | 1.8 |
| November | 63°F (17°C) | 38°F (3°C) | 50°F (10°C) | 1.9" | 10.4 | 0.0 |
| December | 52°F (11°C) | 30°F (-1°C) | 41°F (5°C) | 1.5" | 21.8 | 0.0 |
The year, day by day
Stillwater Rgnl works both ends of the calendar. Normal highs climb to 97°F by July 28 and hold at or above 90°F on 82 dates, then normal lows drop to freezing or below on 79 dates, bottoming at 26°F around January 10.
When the heat sits
Normal highs reach 90°F from June 17 through September 6, covering 82 dates. The broader mild season, normal highs of 70°F or more, runs April 1 to October 29.
This counts calendar dates whose 1991–2020 normal high reaches 90°F. It is a smaller number than the 90°F+ day counts in the monthly table above, which measure how often the threshold was actually crossed in a typical year. A date can average 88°F and still exceed 90°F in half of all years.
The freezing stretch
The normal low stays at or below 32°F into February 20, then returns to freezing around December 4, covering 79 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
Where the wet dates fall
The likeliest wet date is May 9, when 34% of years recorded at least a hundredth of an inch. The driest is January 1 at 14%. Summed across the calendar, that is about 82 wet dates a year.
The widest day
October 21 carries the biggest normal gap between afternoon and dawn, 26°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Stillwater Rgnl.
Where Stillwater Rgnl Stands Nationally
Heat is a defining feature of the normals calendar — the normal daily high reaches 90°F on roughly 82 days a year, more than four out of five ranked stations record.
Stillwater Rgnl earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall
4.1 days with precipitation
5.6 days with precipitation
6.6 days with precipitation
7.9 days with precipitation
10.7 days with precipitation
8.5 days with precipitation
6.6 days with precipitation
7.4 days with precipitation
6.8 days with precipitation
7.9 days with precipitation
5.4 days with precipitation
4.6 days with precipitation
Stillwater Rgnl spreads its precipitation across the year
Neither half of the year dominates here: June through August take 33% of the annual total and December through February 11%, with neither reaching the 35% that would mark a distinct wet season. Stillwater Rgnl has no dry season to plan around, though it does carry a wide 45°F gap between its warmest and coldest month.
The gap between the wettest and driest month still matters: May averages 4.6" and January 0.9". The three wettest months together take 39% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
When it rains in Stillwater Rgnl, it arrives in quantity
33.2" of precipitation falls across only about 82 wet days here, averaging 0.40 inches each. Fewer days carry more water: the year's total is delivered in comparatively heavy events rather than persistent damp.
- Days with measurable precipitation
- about 82 a year, 22% of all days
- Average depth per wet day
- 0.40 inches
- Most wet days
- May, about 11
- Fewest wet days
- January, about 4
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, and a per-day average is not a forecast of any individual storm.
Frost Dates & Growing Season
First Fall Freeze
October 31
50% probability date
Last Spring Freeze
April 3
50% probability date
Growing Season
211 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
3,449
Higher = more heating needed
Cooling Degree Days
2,194
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside OK closest to Stillwater Rgnl on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (62°F here).
- Clarendon, AR 62°F · 0.0°F off
- Clinton, NC 62°F · 0.0°F off
- Colusa, CA 62°F · 0.0°F off
- Jackson Springs, NC 62°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (33.2" here), excluding temperature-peer places.
- Gretna, NE 33.2" · 0.0" off
- Holstein, IA 33.2" · 0.0" off
- Appleton, WI 33.1" · 0.0" off
- Valley, NE 33.1" · 0.0" off
Data-derived climate profile
How Stillwater Rgnl's climate pattern fits together
mixed demand · moderate · mid swing
July and January mark the typical warm and cold ends of the calendar in Stillwater Rgnl's middle-range seasonal profile. The measured spread is 45.0°F. The annual average is 62°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Heating and cooling both register in Stillwater Rgnl's normal, at 3,449 and 2,194 degree days respectively. Neither total exceeds the other by more than two to one, so the record is better read as a mixed-demand calendar than as heating-led or cooling-led.
A roughly 211-day frost-free season sits inside this mixed heating-and-cooling profile. Start and end dates matter because both sides of the thermostat register during a normal year.
Stillwater Rgnl's 33.2 inches of annual precipitation falls in PlainClimate's middle band, so “wet” or “dry” is not the leading description. Snowfall is not added to the interpretation because its annual value is missing. Temperature balance and the calendar distribution carry more information than the annual moisture label alone.
These labels group NOAA 1991-2020 normals from Stillwater Rgnl's primary station, where heating and cooling demand are close enough that neither season sets the character on its own. On a balanced station like Stillwater Rgnl, the bands are descriptive ranges rather than an official NOAA classification or a forecast.
Questions about Stillwater Rgnl's climate
How much rain does Stillwater Rgnl get? ▼
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Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Stillwater Rgnl's primary station: STILLWATER RGNL AP (USW00003965). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Stillwater Rgnl; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Stillwater Rgnl comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.