Fort Supply, 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 Fort Supply's primary NOAA station, FT SUPPLY 3SE.
The climate verdict for Fort Supply
Fort Supply, Oklahoma has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 57°F. It scores 78/100 for climate comfort (good), putting it in the top third of station-mapped location scores and exceeding 72% of them.
- 57°F
- annual average temperature (NOAA normal)
- 78/100
- comfort score, above 72% of station-mapped location scores
- 25.2"
- annual precipitation · 12" snow
- 181 days
- frost-free days per growing season
Fort Supply: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00343304 · Fort Supply, OK 57°F mean · 25.2" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-MID · SWING-WIDE · COMF-TOP · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-MILD 57°F
- RANK-UPPER #4,528
- PHOTO-FINISH ≈ Wellington
- PRCP-MID 25.2"
- SWING-WIDE 47°F
- COMF-TOP 78/100
- LOAD-HEAT 4,555 HDD
- STN-1 USC00343304
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Wellington, KS (+ 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.
- Fort Supply (this station) 57°F
- Cold Haysville, KS 57°F
- Hot Fort Scott, KS 57°F
- Near Wellington, KS 57°F
- Near Norwich, KS 57°F
Climate Living Index · Fort Supply
Fort Supply: 48/100 · grade D
Fort Supply publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Fort Supply, not an official NOAA rating. Rankings still use Comfort Score 78/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Annual temperature balance | 56.9°F · 10.6° from 67.5°F | 66/100 · C |
| Precipitation balance | 25.2 in · 9.8 from 35 in | 66/100 · C |
| Snowfall burden | 12.4 inches/year | 60/100 · C |
| Frost-free season | 181 days/year | 51/100 · D |
| Normal heat + freeze calendar | 199 calendar days | 14/100 · F |
Fort Supply · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Fort Supply is a temperate Köppen climate: Cfa
Coldest-month mean 33.6°F and warmest-month mean 80.8°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
- 80.8°F
- Coldest month
- 33.6°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 · heating-led station
Where Fort Supply sits across the climate record
Three NOAA fields for Fort Supply's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 66th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- 34th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- 69th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Fort Supply compares across U.S. station-mapped locations
Fort Supply's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
78 Top 28% score exceeds 72% 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%). This entry sits in this band.
- 80–90: 921 station-mapped locations (15%). Above this entry.
- 90–100: 564 station-mapped locations (9%). Above this entry.
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 | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 48°F (9°C) | 20°F (-7°C) | 34°F (1°C) | 0.9" | 2.7" | 29.1 | 0.0 |
| February | 52°F (11°C) | 23°F (-5°C) | 37°F (3°C) | 0.8" | 1.9" | 22.5 | 0.0 |
| March | 62°F (16°C) | 32°F (0°C) | 47°F (8°C) | 1.9" | 3.5" | 15.4 | 0.2 |
| April | 71°F (22°C) | 41°F (5°C) | 56°F (13°C) | 2.2" | 0.1" | 5.9 | 1.6 |
| May | 79°F (26°C) | 52°F (11°C) | 66°F (19°C) | 3.2" | 0.0" | 0.6 | 4.5 |
| June | 88°F (31°C) | 63°F (17°C) | 76°F (24°C) | 3.8" | 0.0" | 0.0 | 14.2 |
| July | 94°F (34°C) | 68°F (20°C) | 81°F (27°C) | 2.6" | 0.0" | 0.0 | 23.9 |
| August | 93°F (34°C) | 65°F (18°C) | 79°F (26°C) | 3.1" | 0.0" | 0.0 | 22.0 |
| September | 85°F (29°C) | 56°F (13°C) | 70°F (21°C) | 2.0" | 0.0" | 0.2 | 8.7 |
| October | 73°F (23°C) | 43°F (6°C) | 58°F (14°C) | 2.5" | 0.1" | 4.7 | 1.4 |
| November | 60°F (15°C) | 30°F (-1°C) | 45°F (7°C) | 1.1" | 0.4" | 17.7 | 0.1 |
| December | 49°F (9°C) | 21°F (-6°C) | 35°F (2°C) | 1.2" | 3.7" | 27.6 | 0.0 |
The year, day by day
Fort Supply works both ends of the calendar. Normal highs climb to 95°F by July 21 and hold at or above 90°F on 71 dates, then normal lows drop to freezing or below on 128 dates, bottoming at 19°F around January 16.
When the heat sits
Normal highs reach 90°F from June 22 through August 31, covering 71 dates. The broader mild season, normal highs of 70°F or more, runs April 13 to October 22.
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 March 17, then returns to freezing around November 11, covering 128 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 June 1, when 26% of years recorded at least a hundredth of an inch. The driest is January 1 at 11%. Summed across the calendar, that is about 69 wet dates a year.
The widest day
April 1 carries the biggest normal gap between afternoon and dawn, 31°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Fort Supply.
Where Fort Supply Stands Nationally
Heat is a defining feature of the normals calendar — the normal daily high reaches 90°F on roughly 71 days a year, more than four out of five ranked stations record.
Fort Supply 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 and snowfall
Snow: 2.7"
3.7 days with precipitation
Snow: 1.9"
4.0 days with precipitation
Snow: 3.5"
5.9 days with precipitation
Snow: 0.1"
6.9 days with precipitation
8.2 days with precipitation
7.4 days with precipitation
5.8 days with precipitation
7.1 days with precipitation
5.4 days with precipitation
Snow: 0.1"
5.8 days with precipitation
Snow: 0.4"
4.4 days with precipitation
Snow: 3.7"
3.9 days with precipitation
Fort Supply runs a summer-peaked wet season
38% of Fort Supply's yearly precipitation falls in June, July and August alone, against the 25% an evenly spread year would give those three months. The wettest month is June at 3.8", on a wide 47.2°F gap between its warmest and coldest month. Warm-season convection and, across the Southwest, the North American monsoon produce this shape: rain arrives in short heavy bursts during the hottest part of the year rather than as long cool-season soaking.
- Wettest three months: June, May, August, taking 40% of the annual total between them.
- Driest month: February at 0.8".
- Winter share: 12% falls in December, January and February.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. A summer-peaked label means the June-August share reaches 35%; it describes timing across an average year, not any single season, and says nothing about how heavy an individual storm can be.
When it rains in Fort Supply, it arrives in quantity
25.2" of precipitation falls across only about 69 wet days here, averaging 0.37 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 69 a year, 19% of all days
- Average depth per wet day
- 0.37 inches
- Most wet days
- May, about 8
- 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.
Winter brings real snow to Fort Supply
Fort Supply averages 12.4 inches of snowfall a year, with December the snowiest month on the normals, spread across roughly 7 days that record measurable snow. That is depth accumulating on the ground, which is why it can exceed the annual precipitation figure: precipitation counts the liquid the snow melts down to, and fresh snow is mostly air.
- Annual snowfall: 12.4 inches of depth.
- Days recording measurable snow: about 7 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 5% of the year's precipitation.
NOAA 1991-2020 normals. The ten-to-one ratio is a convention, not a measurement: real ratios vary with temperature, so treat the share as an order of magnitude rather than an exact split.
Frost Dates & Growing Season
First Fall Freeze
October 19
50% probability date
Last Spring Freeze
April 21
50% probability date
Growing Season
181 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,555
Higher = more heating needed
Cooling Degree Days
1,638
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside OK closest to Fort Supply 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 (57°F here).
- Ashland, KS 57°F · 0.0°F off
- Beaver Dam, KY 57°F · 0.0°F off
- Benton, KY 57°F · 0.0°F off
- Clearlake, CA 57°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (25.2" here), excluding temperature-peer places.
- Brookings, SD 25.2" · 0.0" off
- Wilmore, KS 25.2" · 0.0" off
- Port Mansfield, TX 25.3" · 0.0" off
- Skagway, AK 25.2" · 0.0" off
Snow and freeze rhythm
When cold and snow define Fort Supply
heating led · moderate · mid swing
Fort Supply's energy balance leans toward cold weather: 4,555 annual heating degree days against 1,638 for cooling. Its 47.2°F seasonal range still makes the monthly rows more useful than the annual average alone.
Fort Supply's frost-free season lasts about 181 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
-
1. Fort Supply coldest normal
January
The monthly mean of 34°F (1°C) sits near freezing, so cold nights and above-freezing afternoons share the same month.
-
2. Fort Supply typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. Fort Supply snow peak
December
Fort Supply averages 12.4 inches of snow a year, with December the snowiest month on the normals.
Questions about Fort Supply's climate
How much snow does Fort Supply get? ▼
How many days above 90°F does Fort Supply get? ▼
How much energy does heating and cooling require in Fort Supply? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Fort Supply's primary station: FT SUPPLY 3SE (USC00343304). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 4027350). Match rule for Fort Supply: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Fort Supply 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.