Grandfield, OK Climate: Temperature by Month
Pulled from NOAA NCEI 1991–2020 normals →: climate measurements used in PlainClimate's documented score
30-year climate normals (1991-2020) from Grandfield's primary NOAA station, GRANDFIELD 3W MESONET.
The climate verdict for Grandfield
Grandfield, Oklahoma has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 63°F. July is the warmest month at 85°F and January the coldest at 41°F.
- 63°F
- annual average temperature (NOAA normal)
- 220 days
- frost-free days per growing season
Grandfield: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00343707 · Grandfield, OK 63°F mean
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-UNK · SWING-MID · COMF-UNK · LOAD-MIX · STN-1 · BOOK-PART
- TEMP-MILD 63°F
- RANK-UPPER #5,695
- PHOTO-FINISH ≈ Alamogordo
- PRCP-UNK Rain n/a
- SWING-MID 44°F
- COMF-UNK Comfort n/a
- LOAD-MIX H/C balanced
- STN-1 USC00343707
- BOOK-PART 4/6 fields
Nearest mean-temperature peer: Alamogordo, NM (+ 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.
- Grandfield (this station) 63°F
- Hot Brantley Dam, NM 63°F
- Near Alamogordo, NM 63°F
- Near Anniston Metro, AL 63°F
- Near Appling, GA 63°F
Climate Living Index · Grandfield
Grandfield: 62/100 · grade C
Grandfield publishes 3 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 3 missing weights rescale to 100.
PlainClimate-derived for Grandfield, not an official NOAA rating. Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Annual temperature balance | 63.1°F · 4.4° from 67.5°F | 87/100 · A |
| Frost-free season | 220 days/year | 77/100 · B |
| Normal heat + freeze calendar | 170 calendar days | 32/100 · F |
Grandfield · 2026-08-04 · NOAA NCEI Climate Normals · method .
National standing · balanced station
Where Grandfield sits across the climate record
Available NOAA 1991–2020 fields for Grandfield are ranked only against stations that publish the same field, missing metrics stay blank rather than estimated.
- Annual temperature
- Top 17% warmest
- Among 6,861 stations, Grandfield sits in the warmer third of annual means.
- Seasonal temperature swing
- 53rd percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 53°F (12°C) | 29°F (-2°C) | 41°F (5°C) | N/A | 22.3 | 0.0 |
| February | 58°F (14°C) | 33°F (0°C) | 45°F (7°C) | N/A | 15.7 | 0.2 |
| March | 66°F (19°C) | 41°F (5°C) | 53°F (12°C) | N/A | 6.2 | 0.4 |
| April | 74°F (23°C) | 49°F (9°C) | 61°F (16°C) | N/A | 1.4 | 2.2 |
| May | 84°F (29°C) | 59°F (15°C) | 72°F (22°C) | N/A | 0.1 | 10.5 |
| June | 94°F (34°C) | 69°F (20°C) | 81°F (27°C) | N/A | 0.0 | 24.8 |
| July | 98°F (36°C) | 73°F (23°C) | 85°F (30°C) | N/A | 0.0 | 26.9 |
| August | 96°F (36°C) | 72°F (22°C) | 84°F (29°C) | N/A | 0.0 | 26.7 |
| September | 89°F (31°C) | 64°F (18°C) | 76°F (24°C) | N/A | 0.0 | 16.1 |
| October | 76°F (24°C) | 52°F (11°C) | 64°F (18°C) | N/A | 0.7 | 3.2 |
| November | 64°F (18°C) | 39°F (4°C) | 52°F (11°C) | N/A | 7.0 | 0.2 |
| December | 54°F (12°C) | 31°F (0°C) | 43°F (6°C) | N/A | 19.0 | 0.0 |
The year, day by day
Grandfield works both ends of the calendar. Normal highs climb to 98°F by July 26 and hold at or above 90°F on 106 dates, then normal lows drop to freezing or below on 64 dates, bottoming at 29°F around January 4.
When the heat sits
Normal highs reach 90°F from May 30 through September 12, covering 106 dates. The broader mild season, normal highs of 70°F or more, runs March 28 to October 30.
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 11, then returns to freezing around December 10, covering 64 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.
The widest day
March 28 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 Grandfield.
Where Grandfield Stands Nationally
Summers here run among the most heat-heavy normals calendars in the country: on about 106 days a year the normal daily high itself reaches 90°F — a count fewer than one station in ten exceeds.
Grandfield 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
Frost Dates & Growing Season
First Fall Freeze
November 6
50% probability date
Last Spring Freeze
March 31
50% probability date
Growing Season
220 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
3,104
Higher = more heating needed
Cooling Degree Days
2,457
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside OK closest to Grandfield 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 (63°F here).
- Alamogordo, NM 63°F · 0.0°F off
- Appling, GA 63°F · 0.0°F off
- Gilmer, TX 63°F · 0.0°F off
- Haskell, TX 63°F · 0.0°F off
Data-derived climate profile
How Grandfield's climate pattern fits together
mixed demand · mid swing
July and January mark the typical warm and cold ends of the calendar in Grandfield's middle-range seasonal profile. The measured spread is 43.9°F. The annual average is 63°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Heating and cooling both register in Grandfield's normal, at 3,104 and 2,457 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 220-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.
A moisture-range label is withheld because Grandfield's annual precipitation total is unavailable. Monthly source values remain visible where NOAA provides them, and no annual amount is reconstructed from incomplete data.
These labels group NOAA 1991-2020 normals from Grandfield'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 Grandfield, the bands are descriptive ranges rather than an official NOAA classification or a forecast.
Questions about Grandfield's climate
How many days above 90°F does Grandfield get? ▼
How much energy does heating and cooling require in Grandfield? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Grandfield's primary station: GRANDFIELD 3W MESONET (USC00343707). 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 4030850). Match rule for Grandfield: 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 Grandfield 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.