Hammon, OK Climate: Temperature & Rain by Month
Explore NOAA NCEI's 1991–2020 climate normals → and a clearly labeled PlainClimate comfort calculation
30-year climate normals (1991-2020) from Hammon's primary NOAA station, HAMMON 3 SSW.
The climate verdict for Hammon
Hammon, Oklahoma has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 59°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.
- 59°F
- annual average temperature (NOAA normal)
- 78/100
- comfort score, above 72% of station-mapped location scores
- 27.6"
- annual precipitation · 7" snow
- 190 days
- frost-free growing season
Hammon: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00343871 · Hammon, OK 59°F mean · 27.6" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-MID · SWING-WIDE · COMF-TOP · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-MILD 59°F
- RANK-UPPER #4,871
- PHOTO-FINISH ≈ Page
- PRCP-MID 27.6"
- SWING-WIDE 45°F
- COMF-TOP 78/100
- LOAD-HEAT 4,086 HDD
- STN-1 USC00343871
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Page, AZ (+ 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.
- Hammon (this station) 59°F
- Hot Coffeyville, KS 59°F
- Near Page, AZ 59°F
- Near Poplar Bluff, MO 59°F
- Cold Camargo, OK 58°F
Climate Living Index · Hammon
Hammon: 54/100 · grade D
Hammon publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Hammon, not an official NOAA rating. Rankings still use Comfort Score 78/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 27.6 in · 7.4 from 35 in | 74/100 · B |
| Annual temperature balance | 58.6°F · 8.9° from 67.5°F | 72/100 · B |
| Snowfall burden | 7.1 inches/year | 68/100 · C |
| Frost-free season | 190 days/year | 57/100 · C |
| Normal heat + freeze calendar | 192 calendar days | 18/100 · F |
Hammon · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Hammon is a temperate Köppen climate: Cfa
Coldest-month mean 36.3°F and warmest-month mean 81.4°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
- 81.4°F
- Coldest month
- 36.3°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 Hammon sits across the climate record
Three NOAA fields for Hammon's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 29% warmest
- Among 6,861 stations, Hammon sits in the warmer third of annual means.
- Annual precipitation
- 37th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- 60th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Hammon compares across U.S. station-mapped locations
Hammon'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 | 50°F (10°C) | 22°F (-5°C) | 36°F (2°C) | 0.9" | 1.8" | 27.9 | 0.0 |
| February | 55°F (13°C) | 25°F (-4°C) | 40°F (5°C) | 0.8" | 1.2" | 21.1 | 0.1 |
| March | 64°F (18°C) | 34°F (1°C) | 49°F (9°C) | 2.0" | 1.8" | 15.4 | 0.1 |
| April | 73°F (23°C) | 43°F (6°C) | 58°F (14°C) | 2.6" | 0.0" | 4.5 | 0.6 |
| May | 81°F (27°C) | 54°F (12°C) | 67°F (19°C) | 3.9" | 0.0" | 0.1 | 4.6 |
| June | 89°F (32°C) | 64°F (18°C) | 77°F (25°C) | 3.5" | 0.0" | 0.0 | 11.8 |
| July | 94°F (35°C) | 69°F (20°C) | 81°F (27°C) | 2.2" | 0.0" | 0.0 | 24.1 |
| August | 94°F (34°C) | 67°F (19°C) | 80°F (27°C) | 2.9" | 0.0" | 0.0 | 22.7 |
| September | 85°F (30°C) | 58°F (14°C) | 71°F (22°C) | 2.9" | 0.0" | 0.3 | 9.2 |
| October | 74°F (23°C) | 45°F (7°C) | 59°F (15°C) | 2.6" | 0.0" | 3.5 | 1.0 |
| November | 62°F (16°C) | 32°F (0°C) | 47°F (8°C) | 1.5" | 0.0" | 16.1 | 0.1 |
| December | 51°F (11°C) | 23°F (-5°C) | 37°F (3°C) | 1.5" | 2.3" | 26.8 | 0.0 |
The year, day by day
Hammon works both ends of the calendar. Normal highs climb to 95°F by July 30 and hold at or above 90°F on 76 dates, then normal lows drop to freezing or below on 116 dates, bottoming at 22°F around January 1.
When the heat sits
Normal highs reach 90°F from June 18 through September 1, covering 76 dates. The broader mild season, normal highs of 70°F or more, runs April 4 to October 26.
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 10, then returns to freezing around November 16, covering 116 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 4, when 24% of years recorded at least a hundredth of an inch. The driest is January 7 at 8%. Summed across the calendar, that is about 51 wet dates a year.
The widest day
March 31 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 Hammon.
Where Hammon Stands Nationally
Heat is a defining feature of the normals calendar — the normal daily high reaches 90°F on roughly 76 days a year, more than four out of five ranked stations record.
Hammon 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: 1.8"
2.8 days with precipitation
Snow: 1.2"
2.3 days with precipitation
Snow: 1.8"
4.4 days with precipitation
4.4 days with precipitation
6.2 days with precipitation
7.0 days with precipitation
3.5 days with precipitation
4.5 days with precipitation
4.9 days with precipitation
4.3 days with precipitation
3.4 days with precipitation
Snow: 2.3"
3.2 days with precipitation
Hammon spreads its precipitation across the year
Neither half of the year dominates here: June through August take 31% of the annual total and December through February 12%, with neither reaching the 35% that would mark a distinct wet season. Hammon has no dry season to plan around, though it does carry a wide 45.1°F gap between its warmest and coldest month.
The gap between the wettest and driest month still matters: May averages 3.9" and February 0.8". The three wettest months together take 37% 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 Hammon, it arrives in quantity
27.6" of precipitation falls across only about 51 wet days here, averaging 0.54 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 51 a year, 14% of all days
- Average depth per wet day
- 0.54 inches
- Most wet days
- June, about 7
- Fewest wet days
- February, about 2
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 Hammon, but rarely amounts to much
The normals record 7.1 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 3 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 23
50% probability date
Last Spring Freeze
April 16
50% probability date
Growing Season
190 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,086
Higher = more heating needed
Cooling Degree Days
1,777
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside OK closest to Hammon 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 (59°F here).
- Chase City, VA 59°F · 0.0°F off
- Clarkesville, GA 59°F · 0.0°F off
- Danville, VA 59°F · 0.0°F off
- Dover, TN 59°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (27.6" here), excluding temperature-peer places.
- Holdrege, NE 27.6" · 0.0" off
- Pratt, KS 27.6" · 0.0" off
- Oakdale, NE 27.6" · 0.0" off
- Llano, TX 27.6" · 0.0" off
Data-derived climate profile
How Hammon's climate pattern fits together
heating led · moderate · mid swing
Hammon's energy balance leans toward cold weather: 4,086 annual heating degree days against 1,777 for cooling. Its 45.1°F seasonal range still makes the monthly rows more useful than the annual average alone.
Hammon's frost-free season lasts about 190 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 Hammon's middle-range seasonal profile. The measured spread is 45.1°F. The annual average is 59°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Hammon's 27.6 inches of annual precipitation falls in PlainClimate's middle band, so “wet” or “dry” is not the leading description. Annual snowfall totals 7.1 inches. Temperature balance and the calendar distribution carry more information than the annual moisture label alone.
These labels group NOAA 1991-2020 normals from Hammon'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 Hammon, not an official NOAA class or a year-ahead forecast.
Questions about Hammon's climate
How much rain does Hammon get? ▼
How many days above 90°F does Hammon get? ▼
How much energy does heating and cooling require in Hammon? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Hammon's primary station: HAMMON 3 SSW (USC00343871). 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 4032250). Match rule for Hammon: 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 Hammon 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.