Yreka, CA 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 Yreka's primary NOAA station, YREKA.
The climate verdict for Yreka
Dryness leads the climate profile for Yreka, California, with 18.9 inches of precipitation a year. NOAA records an annual average of 54°F. At 54/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 31% of scores.
- 54°F
- annual average temperature (NOAA normal)
- 54/100
- comfort score, above 31% of station-mapped location scores
- 18.9"
- annual precipitation · 12" snow
- 171 days
- frost-free growing season
Yreka: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00049866 · Yreka, CA 54°F mean · 18.9" precip
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-DRY · SWING-MID · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 54°F
- RANK-MID #3,774
- PHOTO-FINISH ≈ Richland
- PRCP-DRY 18.9"
- SWING-MID 38°F
- COMF-LOW 54/100
- LOAD-HEAT 4,951 HDD
- STN-1 USC00049866
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Richland, WA (+ 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.
- Yreka (this station) 54°F
- Hot Mullens, WV 54°F
- Near Richland, WA 54°F
- Cold Pasco Tri Cities, WA 53°F
- Near Nora, VA 53°F
Climate Living Index · Yreka
Yreka: 43/100 · grade D
Yreka publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Yreka, not an official NOAA rating. Rankings still use Comfort Score 54/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Snowfall burden | 11.6 inches/year | 61/100 · C |
| Annual temperature balance | 53.5°F · 14.0° from 67.5°F | 54/100 · D |
| Frost-free season | 171 days/year | 43/100 · D |
| Precipitation balance | 18.9 in · 16.1 from 35 in | 43/100 · D |
| Normal heat + freeze calendar | 179 calendar days | 26/100 · F |
Yreka · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Yreka is a temperate Köppen climate: Csa
Coldest-month mean 36.0°F and warmest-month mean 74.2°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
- 74.2°F
- Coldest month
- 36.0°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 Yreka sits across the climate record
Three NOAA fields for Yreka's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 55th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Drier than 74%
- Yreka's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 72%
- Warmest-to-coldest month gap for Yreka is compact versus 6,861 complete station-years.
How Yreka compares across U.S. station-mapped locations
Yreka's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
54 31st percentile score exceeds 31% 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%). This entry sits in this band.
- 60–70: 1,236 station-mapped locations (20%). Above this entry.
- 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
Yreka's measured station temperature trend
MethodologyAcross 87 complete annual observations from 1895 to 2024, YREKA warmed at a fitted rate of 0.12°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Yreka primary station fitted change +0.12 °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 | 46°F (8°C) | 27°F (-3°C) | 37°F (3°C) | 3.3" | 4.3" | 26.3 | 0.0 |
| February | 52°F (11°C) | 29°F (-2°C) | 40°F (5°C) | 2.2" | 2.6" | 23.0 | 0.0 |
| March | 58°F (15°C) | 32°F (0°C) | 45°F (7°C) | 1.8" | 0.4" | 20.7 | 0.0 |
| April | 64°F (18°C) | 37°F (3°C) | 50°F (10°C) | 1.3" | 0.2" | 11.4 | 0.0 |
| May | 74°F (23°C) | 43°F (6°C) | 59°F (15°C) | 1.3" | 0.0" | 3.5 | 2.3 |
| June | 83°F (28°C) | 49°F (9°C) | 66°F (19°C) | 0.7" | 0.0" | 0.3 | 8.6 |
| July | 93°F (34°C) | 55°F (13°C) | 74°F (23°C) | 0.5" | 0.0" | 0.0 | 22.7 |
| August | 92°F (33°C) | 54°F (12°C) | 73°F (23°C) | 0.3" | 0.0" | 0.0 | 22.1 |
| September | 84°F (29°C) | 47°F (8°C) | 66°F (19°C) | 0.4" | 0.0" | 0.5 | 10.3 |
| October | 70°F (21°C) | 38°F (3°C) | 54°F (12°C) | 1.1" | 0.0" | 9.3 | 0.6 |
| November | 54°F (12°C) | 31°F (0°C) | 43°F (6°C) | 2.2" | 1.5" | 20.9 | 0.0 |
| December | 45°F (7°C) | 27°F (-3°C) | 36°F (2°C) | 3.7" | 2.6" | 26.3 | 0.0 |
The year, day by day
Yreka works both ends of the calendar. Normal highs climb to 95°F by July 25 and hold at or above 90°F on 55 dates, then normal lows drop to freezing or below on 124 dates, bottoming at 26°F around December 23.
When the heat sits
Normal highs reach 90°F from July 4 through August 27, covering 55 dates. The broader mild season, normal highs of 70°F or more, runs May 4 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 13, then returns to freezing around November 11, covering 124 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 January 8, when 42% of years recorded at least a hundredth of an inch. The driest is August 26 at 6%. Summed across the calendar, that is about 91 wet dates a year.
The widest day
August 23 carries the biggest normal gap between afternoon and dawn, 39°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Yreka.
Where Yreka Stands Nationally
Day-to-night contrast is extreme by national standards — the widest normal daily swing reaches about 39°F, sharper than nine in ten ranked stations see.
Yreka 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: 4.3"
13.2 days with precipitation
Snow: 2.6"
9.9 days with precipitation
Snow: 0.4"
11.1 days with precipitation
Snow: 0.2"
8.8 days with precipitation
8.0 days with precipitation
4.3 days with precipitation
2.9 days with precipitation
2.0 days with precipitation
2.0 days with precipitation
5.0 days with precipitation
Snow: 1.5"
10.6 days with precipitation
Snow: 2.6"
12.8 days with precipitation
Yreka'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 8%. 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 38.2°F seasonal spread.
- Wettest month
- December, 3.7"
- Driest month
- August, 0.3"
- Wettest three months
- December, January, November (49% 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 Yreka's precipitation splits across the calendar
About 91 days a year record measurable precipitation here, carrying 18.9" between them, or roughly 0.21 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 Yreka, but rarely amounts to much
The normals record 11.6 inches of snow a year here, most likely in January. 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 7 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 18
50% probability date
Last Spring Freeze
April 30
50% probability date
Growing Season
171 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,951
Higher = more heating needed
Cooling Degree Days
787
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside CA closest to Yreka 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 (54°F here).
- Bison, KS 54°F · 0.0°F off
- Brookville, IN 54°F · 0.0°F off
- Brownell, KS 54°F · 0.0°F off
- Columbus, OH 54°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (18.9" here), excluding temperature-peer places.
- Center, ND 18.9" · 0.0" off
- Garden City, KS 18.9" · 0.0" off
- Willow City, ND 18.9" · 0.0" off
- Keno, OR 18.9" · 0.0" off
Data-derived climate profile
How Yreka's climate pattern fits together
heating led · dry · mid swing
Yreka's energy balance leans toward cold weather: 4,951 annual heating degree days against 787 for cooling. Its 38.2°F seasonal range still makes the monthly rows more useful than the annual average alone.
Yreka's frost-free season lasts about 171 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
July and December mark the typical warm and cold ends of the calendar in Yreka's middle-range seasonal profile. The measured spread is 38.2°F. The annual average is 54°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Yreka's cold-season load does not imply a wet climate. Annual precipitation is 18.9 inches, which places the station in PlainClimate's dry range. Annual snowfall totals 11.6 inches. The snowfall and rainfall fields should be read separately rather than inferred from temperature.
These labels group NOAA 1991-2020 normals from Yreka'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 Yreka, not an official NOAA class or a year-ahead forecast.
Questions about Yreka's climate
How much rain does Yreka get? ▼
How many days above 90°F does Yreka get? ▼
How much energy does heating and cooling require in Yreka? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Yreka's primary station: YREKA (USC00049866). 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 0686944). Match rule for Yreka: 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 Yreka 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.