Willows, CA 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 Willows's primary NOAA station, WILLOWS 6 W.
The climate verdict for Willows
Willows, California has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 64°F. It scores 96/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 96% of them.
- 64°F
- average temperature, NOAA 1991-2020 normal
- 96/100
- comfort score, above 96% of station-mapped location scores
- 21.9"
- annual precipitation
- 288 days
- growing season, frost-free days
Willows: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00049699 · Willows, CA 64°F mean · 21.9" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-DRY · SWING-MID · COMF-TOP · LOAD-MIX · STN-1 · BOOK-FULL
- TEMP-MILD 64°F
- RANK-UPPER #5,832
- PHOTO-FINISH ≈ Abilene
- PRCP-DRY 21.9"
- SWING-MID 30°F
- COMF-TOP 96/100
- LOAD-MIX H/C balanced
- STN-1 USC00049699
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Abilene, 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 CA station list.
- Willows (this station) 64°F
- Hot Bonita, TX 64°F
- Near Abilene, TX 64°F
- Near Anson, TX 64°F
- Near Bessemer, AL 64°F
Climate Living Index · Willows
Willows: 79/100 · grade B
Willows publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Willows, not an official NOAA rating. Rankings still use Comfort Score 96/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Frost-free season | 288 days/year | 99/100 · A |
| Annual temperature balance | 63.7°F · 3.8° from 67.5°F | 89/100 · A |
| Normal heat + freeze calendar | 100 calendar days | 76/100 · B |
| Precipitation balance | 21.9 in · 13.1 from 35 in | 54/100 · D |
Willows · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Willows is a temperate Köppen climate: Csa
Coldest-month mean 48.7°F and warmest-month mean 78.8°F place this station in temperate, dry-summer, hot summer climates (Csa). Class Csa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: temperate, specifically temperate, dry-summer, hot summer.
- Köppen code
- Csa
- Group
- Temperate
- Warmest month
- 78.8°F
- Coldest month
- 48.7°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 Willows sits across the climate record
Three NOAA fields for Willows's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 15% warmest
- Among 6,861 stations, Willows sits in the warmer third of annual means.
- Annual precipitation
- 31st percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- Narrower than 90%
- Warmest-to-coldest month gap for Willows is compact versus 6,861 complete station-years.
How Willows compares across U.S. station-mapped locations
Willows's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
96 Top 4% score exceeds 96% 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
Willows's measured station temperature trend
MethodologyAcross 60 complete annual observations from 1931 to 2024, WILLOWS 6 W warmed at a fitted rate of 0.11°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Willows primary station fitted change +0.11 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 58°F (15°C) | 40°F (4°C) | 49°F (10°C) | 4.4" | 6.2 | 0.0 |
| February | 63°F (17°C) | 42°F (5°C) | 52°F (11°C) | 4.2" | 3.6 | 0.0 |
| March | 68°F (20°C) | 44°F (7°C) | 56°F (13°C) | 2.8" | 1.6 | 0.0 |
| April | 75°F (24°C) | 47°F (8°C) | 61°F (16°C) | 1.5" | 0.9 | 1.3 |
| May | 83°F (28°C) | 54°F (12°C) | 68°F (20°C) | 1.2" | 0.1 | 7.4 |
| June | 90°F (32°C) | 60°F (16°C) | 75°F (24°C) | 0.5" | 0.0 | 16.3 |
| July | 95°F (35°C) | 63°F (17°C) | 79°F (26°C) | 0.0" | 0.0 | 25.4 |
| August | 94°F (34°C) | 61°F (16°C) | 78°F (25°C) | 0.1" | 0.0 | 24.6 |
| September | 91°F (33°C) | 58°F (15°C) | 75°F (24°C) | 0.2" | 0.0 | 18.3 |
| October | 82°F (28°C) | 53°F (11°C) | 67°F (19°C) | 1.1" | 0.0 | 5.2 |
| November | 67°F (20°C) | 44°F (7°C) | 56°F (13°C) | 2.4" | 2.0 | 0.0 |
| December | 58°F (15°C) | 39°F (4°C) | 49°F (9°C) | 3.6" | 8.3 | 0.0 |
The year, day by day
The year in Willows runs from a mild 39°F around December 18 to 95°F at the peak near July 12, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from June 15 through September 22, covering 100 dates. The broader mild season, normal highs of 70°F or more, runs March 28 to November 9.
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.
No freezing date
Not one calendar date in the 1991–2020 record carries a normal low at or below 32°F. The coldest normal low of the year is 39°F around December 18.
The widest day
September 4 carries the biggest normal gap between afternoon and dawn, 33°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Willows.
Where Willows Stands Nationally
Summers here run among the most heat-heavy normals calendars in the country: on about 100 days a year the normal daily high itself reaches 90°F — a count fewer than one station in ten exceeds.
Daily temperature swings run wider than most of the country, peaking near 33°F between the normal high and low.
Willows earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall
Willows's wet season runs through the cold months
December, January and February carry 56% of the year's precipitation here, while June through August contribute 3%. That is the cool-season-dominant pattern of the West Coast and the higher inland West, where storm tracks swing south in winter and summer turns dry; the thermometer meanwhile shows a 30.1°F seasonal spread.
- Wettest month
- January, 4.4"
- Driest month
- July, 0.0"
- Wettest three months
- January, February, December (56% of the year)
Shares are computed from this station's own 1991-2020 monthly precipitation normals. A cool-season label means the December-February share reaches 35%. Where snow falls, the monthly figures above report liquid-equivalent precipitation, so a wet winter month is not necessarily a rainy one.
Frost Dates & Growing Season
First Fall Freeze
December 6
50% probability date
Last Spring Freeze
February 21
50% probability date
Growing Season
288 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
2,185
Higher = more heating needed
Cooling Degree Days
1,732
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside CA closest to Willows 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 (64°F here).
- Abilene, TX 64°F · 0.0°F off
- Anson, TX 64°F · 0.0°F off
- Bessemer, AL 64°F · 0.0°F off
- Breckenridge, TX 64°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (21.9" here), excluding temperature-peer places.
- Edmore, ND 21.9" · 0.0" off
- Eldorado, TX 21.9" · 0.0" off
- Aberdeen, SD 21.8" · 0.1" off
- Leola, SD 21.8" · 0.1" off
Data-derived climate profile
How Willows's climate pattern fits together
mixed demand · moderate · mid swing
July and December mark the typical warm and cold ends of the calendar in Willows's middle-range seasonal profile. The measured spread is 30.1°F. The annual average is 64°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Heating and cooling both register in Willows's normal, at 2,185 and 1,732 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.
The frost-free window extends for about 288 days. That is a long calendar measure, but it is not a forecast and does not combine heat, rainfall, soil, or local elevation into a planting recommendation.
Willows's 21.9 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 Willows'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 Willows, the bands are descriptive ranges rather than an official NOAA classification or a forecast.
Questions about Willows's climate
How much rain does Willows get? ▼
How many days above 90°F does Willows get? ▼
How much energy does heating and cooling require in Willows? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Willows's primary station: WILLOWS 6 W (USC00049699). 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 0685684). Match rule for Willows: 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 Willows 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.