Callahan, CA Climate: Temperature & Rain by Month
Pulled from NOAA NCEI 1991–2020 normals →: climate measurements used in PlainClimate's documented score
30-year climate normals (1991-2020) from Callahan's primary NOAA station, CALLAHAN.
The climate verdict for Callahan
Callahan, California has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 52°F. Its climate comfort score of 69/100 (good) lands mid-pack nationally, exceeding 65% of station-mapped location scores.
- 52°F
- average temperature, NOAA 1991-2020 normal
- 69/100
- comfort score, above 65% of station-mapped location scores
- 20.8"
- annual precipitation · 4" snow
- 138 days
- frost-free days per growing season
Callahan: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00041316 · Callahan, CA 52°F mean · 20.8" precip
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-DRY · SWING-MID · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 52°F
- RANK-MID #3,499
- PHOTO-FINISH ≈ Spruce Pine
- PRCP-DRY 20.8"
- SWING-MID 34°F
- COMF-MID 69/100
- LOAD-HEAT 5,006 HDD
- STN-1 USC00041316
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Spruce Pine, NC (+ 0.1 °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.
- Hot Spruce Pine, NC 53°F
- Callahan (this station) 52°F
- Cold Forest Grove, OR 52°F
- Near Ashland, OR 52°F
- Near Celo, NC 52°F
Climate Living Index · Callahan
Callahan: 47/100 · grade D
Callahan publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Callahan, not an official NOAA rating. Rankings still use Comfort Score 69/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Snowfall burden | 4.4 inches/year | 72/100 · B |
| Annual temperature balance | 52.4°F · 15.1° from 67.5°F | 51/100 · D |
| Precipitation balance | 20.8 in · 14.2 from 35 in | 50/100 · D |
| Normal heat + freeze calendar | 154 calendar days | 44/100 · D |
| Frost-free season | 138 days/year | 17/100 · F |
Callahan · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Callahan is a temperate Köppen climate: Csb
Coldest-month mean 36.8°F and warmest-month mean 70.4°F place this station in temperate, dry-summer, warm summer climates (Csb). Class Csb is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: temperate, specifically temperate, dry-summer, warm summer.
- Köppen code
- Csb
- Group
- Temperate
- Warmest month
- 70.4°F
- Coldest month
- 36.8°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 Callahan sits across the climate record
Three NOAA fields for Callahan's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 51st percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Drier than 71%
- Callahan's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 85%
- Warmest-to-coldest month gap for Callahan is compact versus 6,861 complete station-years.
How Callahan compares across U.S. station-mapped locations
Callahan's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
69 Top 35% score exceeds 65% 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%). This entry sits in this band.
- 70–80: 650 station-mapped locations (11%). Above this entry.
- 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
Callahan's measured station temperature trend
MethodologyAcross 58 complete annual observations from 1954 to 2017, CALLAHAN 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.
- Callahan 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 | 48°F (9°C) | 28°F (-2°C) | 38°F (3°C) | 3.5" | 0.4" | 24.9 | 0.0 |
| February | 53°F (12°C) | 30°F (-1°C) | 41°F (5°C) | 2.8" | 0.0" | 21.0 | 0.0 |
| March | 59°F (15°C) | 32°F (0°C) | 45°F (7°C) | 2.4" | 1.1" | 20.4 | 0.0 |
| April | 65°F (18°C) | 35°F (2°C) | 50°F (10°C) | 1.4" | 0.3" | 14.2 | 0.0 |
| May | 73°F (23°C) | 40°F (5°C) | 57°F (14°C) | 1.6" | 0.0" | 6.0 | 0.6 |
| June | 81°F (27°C) | 45°F (7°C) | 63°F (17°C) | 0.7" | 0.0" | 1.3 | 3.2 |
| July | 90°F (32°C) | 51°F (10°C) | 70°F (21°C) | 0.5" | 0.0" | 0.1 | 14.5 |
| August | 89°F (32°C) | 49°F (9°C) | 69°F (21°C) | 0.3" | 0.0" | 0.0 | 11.3 |
| September | 83°F (28°C) | 43°F (6°C) | 63°F (17°C) | 0.4" | 0.0" | 1.4 | 3.5 |
| October | 70°F (21°C) | 36°F (2°C) | 53°F (12°C) | 1.3" | 0.0" | 12.5 | 0.1 |
| November | 54°F (12°C) | 31°F (0°C) | 43°F (6°C) | 2.3" | 1.1" | 20.7 | 0.0 |
| December | 46°F (8°C) | 28°F (-2°C) | 37°F (3°C) | 3.8" | 1.5" | 25.3 | 0.0 |
The year, day by day
Callahan works both ends of the calendar. Normal highs climb to 92°F by July 23 and hold at or above 90°F on 29 dates, then normal lows drop to freezing or below on 125 dates, bottoming at 27°F around January 1.
When the heat sits
Normal highs reach 90°F from July 13 through August 10, covering 29 dates. The broader mild season, normal highs of 70°F or more, runs May 5 to October 15.
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 14, then returns to freezing around November 11, covering 125 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 December 9, when 43% of years recorded at least a hundredth of an inch. The driest is August 21 at 5%. Summed across the calendar, that is about 97 wet dates a year.
The widest day
August 28 carries the biggest normal gap between afternoon and dawn, 40°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Callahan.
Where Callahan Stands Nationally
Day-to-night contrast is extreme by national standards — the widest normal daily swing reaches about 40°F, sharper than nine in ten ranked stations see.
Callahan 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: 0.4"
13.1 days with precipitation
11.3 days with precipitation
Snow: 1.1"
12.7 days with precipitation
Snow: 0.3"
10.0 days with precipitation
8.4 days with precipitation
4.3 days with precipitation
2.5 days with precipitation
1.7 days with precipitation
2.2 days with precipitation
5.6 days with precipitation
Snow: 1.1"
10.8 days with precipitation
Snow: 1.5"
13.4 days with precipitation
Callahan's wet season runs through the cold months
December, January and February carry 48% of the year's precipitation here, while June through August contribute 7%. 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 33.6°F seasonal spread.
- Wettest month
- December, 3.8"
- Driest month
- August, 0.3"
- Wettest three months
- December, January, February (48% 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.
How Callahan's precipitation splits across the calendar
About 96 days a year record measurable precipitation here, carrying 20.8" between them, or roughly 0.22 inches on a typical wet day. That sits in the middle band: neither the many-light-days pattern of the Pacific Northwest and the Great Lakes, nor the few-heavy-events pattern of the Gulf and the desert Southwest.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year and say nothing about the heaviest single storm on record.
Snow reaches Callahan, but rarely amounts to much
The normals record 4.4 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 1 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 5
50% probability date
Last Spring Freeze
May 20
50% probability date
Growing Season
138 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
5,006
Higher = more heating needed
Cooling Degree Days
423
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside CA closest to Callahan 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 (52°F here).
- Auburn, NE 52°F · 0.0°F off
- Blanding, UT 52°F · 0.0°F off
- Cleveland, OH 52°F · 0.0°F off
- Cosby, MO 52°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (20.8" here), excluding temperature-peer places.
- Kennebec, SD 20.8" · 0.0" off
- Valentine, NE 20.8" · 0.0" off
- Ashley, ND 20.7" · 0.0" off
- McDonald, KS 20.8" · 0.0" off
Data-derived climate profile
How Callahan's climate pattern fits together
heating led · moderate · mid swing
Callahan's energy balance leans toward cold weather: 5,006 annual heating degree days against 423 for cooling. Its 33.6°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 138 days are frost-free in a normal year. That short interval is consistent with the cold-season signal, but the measure does not predict the exact first or last freeze in any one year.
July and December mark the typical warm and cold ends of the calendar in Callahan's middle-range seasonal profile. The measured spread is 33.6°F. The annual average is 52°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Callahan's 20.8 inches of annual precipitation falls in PlainClimate's middle band, so “wet” or “dry” is not the leading description. Annual snowfall totals 4.4 inches. Temperature balance and the calendar distribution carry more information than the annual moisture label alone.
These labels group NOAA 1991-2020 normals from Callahan'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 Callahan, not an official NOAA class or a year-ahead forecast.
Questions about Callahan's climate
How much rain does Callahan get? ▼
How many days above 90°F does Callahan get? ▼
How much energy does heating and cooling require in Callahan? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Callahan's primary station: CALLAHAN (USC00041316). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Callahan; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Callahan 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.