Blackwell, OK Climate: Temperature & Rain by Month
Average temperature and precipitation from NOAA NCEI 1991–2020 normals →, with a derived climate comfort score
30-year climate normals (1991-2020) from Blackwell's primary NOAA station, BLACKWELL 1SSW - 2 stations mapped to the area.
The climate verdict for Blackwell
Blackwell, Oklahoma has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 58°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.
- 58°F
- yearly average temperature, NOAA normal
- 78/100
- comfort score, above 72% of station-mapped location scores
- 38.8"
- annual precipitation · 8" snow
- 200 days
- growing season, frost-free days
Blackwell: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00340818 · Blackwell, OK 58°F mean · 38.8" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-MID · SWING-WIDE · COMF-TOP · LOAD-HEAT · STN-MULTI · BOOK-FULL
- TEMP-MILD 58°F
- RANK-UPPER #4,803
- PHOTO-FINISH ≈ Sanford Dam
- PRCP-MID 38.8"
- SWING-WIDE 47°F
- COMF-TOP 78/100
- LOAD-HEAT 4,183 HDD
- STN-MULTI USC00340818
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Sanford Dam, TX (+ 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.
- Hot Billings, OK 59°F
- Blackwell (this station) 58°F
- Cold Winfield Stroth…, KS 58°F
- Near Sanford Dam, TX 58°F
- Near Camargo, OK 58°F
Climate Living Index · Blackwell
Blackwell: 59/100 · grade C
Blackwell publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Blackwell, not an official NOAA rating. Rankings still use Comfort Score 78/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 38.8 in · 3.8 from 35 in | 86/100 · A |
| Annual temperature balance | 58.3°F · 9.2° from 67.5°F | 71/100 · B |
| Snowfall burden | 7.9 inches/year | 66/100 · C |
| Frost-free season | 200 days/year | 64/100 · C |
| Normal heat + freeze calendar | 179 calendar days | 26/100 · F |
Blackwell · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Blackwell is a temperate Köppen climate: Cfa
Coldest-month mean 34.6°F and warmest-month mean 81.5°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
- 81.5°F
- Coldest month
- 34.6°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 Blackwell sits across the climate record
Three NOAA fields for Blackwell's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 30% warmest
- Among 6,861 stations, Blackwell sits in the warmer third of annual means.
- Annual precipitation
- 56th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- 68th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Blackwell compares across U.S. station-mapped locations
Blackwell'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
Blackwell's measured station temperature trend
MethodologyAcross 39 complete annual observations from 1955 to 2018, BLACKWELL 1SSW warmed at a fitted rate of 0.14°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Blackwell primary station fitted change +0.14 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 47°F (8°C) | 22°F (-5°C) | 35°F (1°C) | 1.3" | 2.0" | 26.5 | 0.0 |
| February | 52°F (11°C) | 26°F (-4°C) | 39°F (4°C) | 1.4" | 1.7" | 20.1 | 0.0 |
| March | 61°F (16°C) | 34°F (1°C) | 48°F (9°C) | 2.8" | 1.4" | 11.4 | 0.0 |
| April | 71°F (22°C) | 44°F (6°C) | 57°F (14°C) | 3.9" | 0.1" | 2.5 | 0.6 |
| May | 79°F (26°C) | 55°F (13°C) | 67°F (19°C) | 5.4" | 0.0" | 0.0 | 3.6 |
| June | 89°F (31°C) | 65°F (18°C) | 77°F (25°C) | 5.1" | 0.0" | 0.0 | 14.4 |
| July | 94°F (34°C) | 69°F (21°C) | 82°F (28°C) | 4.4" | 0.0" | 0.0 | 22.6 |
| August | 93°F (34°C) | 68°F (20°C) | 80°F (27°C) | 4.1" | 0.0" | 0.0 | 20.8 |
| September | 85°F (29°C) | 60°F (15°C) | 72°F (22°C) | 3.2" | 0.0" | 0.0 | 8.7 |
| October | 73°F (23°C) | 47°F (8°C) | 60°F (16°C) | 3.6" | 0.0" | 1.5 | 1.1 |
| November | 60°F (16°C) | 34°F (1°C) | 47°F (8°C) | 1.9" | 0.1" | 11.6 | 0.0 |
| December | 49°F (9°C) | 26°F (-4°C) | 37°F (3°C) | 1.7" | 2.6" | 22.8 | 0.0 |
The year, day by day
Blackwell works both ends of the calendar. Normal highs climb to 95°F by July 25 and hold at or above 90°F on 71 dates, then normal lows drop to freezing or below on 108 dates, bottoming at 22°F around January 15.
When the heat sits
Normal highs reach 90°F from June 21 through August 30, covering 71 dates. The broader mild season, normal highs of 70°F or more, runs April 13 to October 23.
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 8, then returns to freezing around November 22, covering 108 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 25, when 31% of years recorded at least a hundredth of an inch. The driest is January 19 at 15%. Summed across the calendar, that is about 81 wet dates a year.
The widest day
April 1 carries the biggest normal gap between afternoon and dawn, 28°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Blackwell.
Where Blackwell 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.
Blackwell 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: 2.0"
4.5 days with precipitation
Snow: 1.7"
5.2 days with precipitation
Snow: 1.4"
6.9 days with precipitation
Snow: 0.1"
7.8 days with precipitation
9.3 days with precipitation
9.1 days with precipitation
7.7 days with precipitation
7.8 days with precipitation
6.4 days with precipitation
6.5 days with precipitation
Snow: 0.1"
5.2 days with precipitation
Snow: 2.6"
5.2 days with precipitation
Blackwell runs a summer-peaked wet season
35% of Blackwell'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 May at 5.4", on a wide 46.9°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: May, June, July, taking 38% of the annual total between them.
- Driest month: January at 1.3".
- Winter share: 11% 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 Blackwell, it arrives in quantity
38.8" of precipitation falls across only about 82 wet days here, averaging 0.48 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
- 0.48 inches
- Most wet days
- May, about 9
- Fewest wet days
- January, about 5
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.
Snow reaches Blackwell, but rarely amounts to much
The normals record 7.9 inches of snow a year here, most likely in December. That is a real but marginal amount: enough that snow is part of the local record, not enough to define the winter.
A figure in this range usually reflects a handful of events that melt quickly rather than a season of accumulation; about 4 days a year record any measurable snow at all.
NOAA 1991-2020 normals. An average across thirty years can smooth away a single heavy winter, so a small annual figure does not mean a significant snowfall is impossible.
Frost Dates & Growing Season
First Fall Freeze
October 29
50% probability date
Last Spring Freeze
April 12
50% probability date
Growing Season
200 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,183
Higher = more heating needed
Cooling Degree Days
1,793
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside OK closest to Blackwell 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 (58°F here).
- Canyon, TX 58°F · 0.0°F off
- Carthage, MO 58°F · 0.0°F off
- Hopkinsville, KY 58°F · 0.0°F off
- Jasper, GA 58°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (38.8" here), excluding temperature-peer places.
- Princeville, IL 38.8" · 0.0" off
- Columbus Junction, IA 38.8" · 0.0" off
- Elkader, IA 38.8" · 0.0" off
- Morris, IL 38.8" · 0.0" off
Data-derived climate profile
How Blackwell's climate pattern fits together
heating led · moderate · mid swing
Blackwell's energy balance leans toward cold weather: 4,183 annual heating degree days against 1,793 for cooling. Its 46.9°F seasonal range still makes the monthly rows more useful than the annual average alone.
Blackwell's frost-free season lasts about 200 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
July and January mark the typical warm and cold ends of the calendar in Blackwell's middle-range seasonal profile. The measured spread is 46.9°F. The annual average is 58°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Blackwell's 38.8 inches of annual precipitation falls in PlainClimate's middle band, so “wet” or “dry” is not the leading description. Annual snowfall totals 7.9 inches. Temperature balance and the calendar distribution carry more information than the annual moisture label alone.
These labels group NOAA 1991-2020 normals from Blackwell's primary station, so the winter figures are a thirty-year average and not a floor: a single hard season can run well below them. Treat each band as a descriptive range for Blackwell, not an official NOAA class or a year-ahead forecast.
Questions about Blackwell's climate
How much rain does Blackwell get? ▼
How many days above 90°F does Blackwell get? ▼
How much energy does heating and cooling require in Blackwell? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Blackwell's primary station: BLACKWELL 1SSW (USC00340818). 2 NOAA stations are mapped to the Blackwell area; the primary station's record is used for consistency. 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 4006600). Match rule for Blackwell: 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 Blackwell 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.