Klamath, 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 Klamath's primary NOAA station, KLAMATH.
The climate verdict for Klamath
Water is the standout signal in Klamath, California: 78.9 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 52°F. Its climate comfort score of 57/100 (moderate) lands mid-pack nationally, exceeding 36% of station-mapped location scores.
- 52°F
- annual average temperature (NOAA normal)
- 57/100
- comfort score, above 36% of station-mapped location scores
- 78.9"
- yearly precipitation total
- 249 days
- frost-free days per growing season
Klamath: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00044577 · Klamath, CA 52°F mean · 78.9" precip
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-WET · SWING-NARROW · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 52°F
- RANK-MID #3,499
- PHOTO-FINISH ≈ Arcata Eureka
- PRCP-WET 78.9"
- SWING-NARROW 13°F
- COMF-MID 57/100
- LOAD-HEAT 4,602 HDD
- STN-1 USC00044577
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Arcata Eureka, CA (+ 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 Cloverdale, OR 53°F
- Near Arcata Eureka, CA 53°F
- Klamath (this station) 52°F
- Cold Crescent City, CA 52°F
- Near Yachats, OR 52°F
Climate Living Index · Klamath
Klamath: 65/100 · grade C
Klamath publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Klamath, not an official NOAA rating. Rankings still use Comfort Score 57/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 0 calendar days | 100/100 · A |
| Snowfall burden | 0.0 inches/year | 90/100 · A |
| Frost-free season | 249 days/year | 88/100 · A |
| Annual temperature balance | 52.4°F · 15.1° from 67.5°F | 51/100 · D |
| Precipitation balance | 78.9 in · 43.9 from 35 in | 0/100 · F |
Klamath · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Klamath is a temperate Köppen climate: Csb
Coldest-month mean 46.1°F and warmest-month mean 59.4°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
- 59.4°F
- Coldest month
- 46.1°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 Klamath sits across the climate record
Three NOAA fields for Klamath'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
- Top 1% wettest
- Klamath's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 99%
- Warmest-to-coldest month gap for Klamath is compact versus 6,861 complete station-years.
How Klamath compares across U.S. station-mapped locations
Klamath's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
57 36th percentile score exceeds 36% 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
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 55°F (13°C) | 39°F (4°C) | 47°F (8°C) | 13.4" | 0.0" | 4.6 | 0.0 |
| February | 56°F (13°C) | 39°F (4°C) | 47°F (9°C) | 10.7" | 0.0" | 5.0 | 0.0 |
| March | 57°F (14°C) | 40°F (5°C) | 49°F (9°C) | 10.7" | 0.0" | 2.9 | 0.0 |
| April | 59°F (15°C) | 43°F (6°C) | 51°F (10°C) | 6.6" | 0.0" | 1.8 | 0.0 |
| May | 61°F (16°C) | 47°F (8°C) | 54°F (12°C) | 3.6" | 0.0" | 0.8 | 0.0 |
| June | 64°F (18°C) | 47°F (8°C) | 55°F (13°C) | 1.8" | 0.0" | 0.0 | 0.0 |
| July | 66°F (19°C) | 53°F (12°C) | 59°F (15°C) | 0.3" | 0.0" | 0.0 | 0.0 |
| August | 66°F (19°C) | 51°F (11°C) | 59°F (15°C) | 0.3" | 0.0" | 0.0 | 0.0 |
| September | 67°F (19°C) | 50°F (10°C) | 58°F (15°C) | 1.3" | 0.0" | 0.3 | 0.1 |
| October | 63°F (17°C) | 45°F (7°C) | 54°F (12°C) | 5.0" | 0.0" | 0.6 | 0.1 |
| November | 58°F (14°C) | 41°F (5°C) | 49°F (10°C) | 10.1" | 0.0" | 4.3 | 0.0 |
| December | 54°F (12°C) | 38°F (3°C) | 46°F (8°C) | 15.3" | 0.0" | 5.5 | 0.0 |
The year, day by day
The calendar barely moves in Klamath: no date carries a normal high of 90°F or a normal low at freezing. The year runs between 38°F near December 15 and 67°F near September 8.
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 38°F around December 15.
Where the wet dates fall
The likeliest wet date is December 3, when 60% of years recorded at least a hundredth of an inch. The driest is July 29 at 6%. Summed across the calendar, that is about 129 wet dates a year.
The widest day
October 14 carries the biggest normal gap between afternoon and dawn, 19°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Klamath.
Where Klamath Stands Nationally
This is one of the wettest normals climates ranked: about 79 inches of precipitation in a normal year, a total fewer than one station in ten surpasses.
Among the steadiest day-night climates ranked: even the widest normal daily swing holds to roughly 19°F.
Klamath earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall and snowfall
18.4 days with precipitation
16.5 days with precipitation
15.8 days with precipitation
15.5 days with precipitation
9.6 days with precipitation
5.2 days with precipitation
2.0 days with precipitation
1.9 days with precipitation
2.8 days with precipitation
7.0 days with precipitation
15.6 days with precipitation
17.8 days with precipitation
Klamath's wet season runs through the cold months
December, January and February carry 50% 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 an unusually narrow 13.3°F seasonal spread.
- Wettest month
- December, 15.3"
- Driest month
- July, 0.3"
- Wettest three months
- December, January, February (50% 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.
When it rains in Klamath, it arrives in quantity
78.9" of precipitation falls across only about 128 wet days here, averaging 0.62 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 128 a year, 35% of all days
- Average depth per wet day
- 0.62 inches
- Most wet days
- January, about 18
- Fewest wet days
- August, 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.
Klamath's record shows no measurable snowfall
This station measured snowfall across the 1991-2020 period and recorded none: the annual normal is 0.0 inches. That is a measured zero rather than missing data, which is a meaningful distinction here , most stations in the database simply do not report snow at all, and those pages say nothing about it.
A thirty-year normal of zero describes the typical year at this station. It is not a claim that snow has never fallen in the area.
Frost Dates & Growing Season
First Fall Freeze
November 20
50% probability date
Last Spring Freeze
March 16
50% probability date
Growing Season
249 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,602
Higher = more heating needed
Cooling Degree Days
7
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside CA closest to Klamath 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 (78.9" here), excluding temperature-peer places.
- Kodiak, AK 78.3" · 0.6" off
- Yachats, OR 78.3" · 0.6" off
- Cloverdale, OR 79.7" · 0.8" off
- Brookings, OR 77.6" · 1.3" off
Data-derived climate profile
How Klamath's climate pattern fits together
heating led · wet · low swing
Heating is the larger measured load in Klamath, at 4,602 degree days versus 7 for cooling. Unlike a strongly continental record, however, its 13.3°F month-to-month range is compact; persistent cool-season demand matters more than a dramatic summer-to-winter reversal.
The frost-free window extends for about 249 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.
Klamath's 13.3°F seasonal spread is compact even though precipitation is abundant. July and December mark the typical warm and cold ends of the calendar. The annual average is 52°F. Temperature is relatively steady; the monthly rows show how rain and snow observations vary across the calendar.
Alongside its heating load, Klamath carries 78.9 inches of precipitation in a normal year, inside PlainClimate's wet range. Recorded annual snowfall is negligible. That distinction matters because a wet annual total can arrive as rain, snow, or a mixture at different times.
These labels group NOAA 1991-2020 normals from Klamath'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 Klamath, not an official NOAA class or a year-ahead forecast.
Questions about Klamath's climate
How much rain does Klamath get? ▼
How much energy does heating and cooling require in Klamath? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Klamath's primary station: KLAMATH (USC00044577). 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 a census-designated place (GEOID 0638702), not an incorporated municipality. Match rule for Klamath: 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 Klamath 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.