Climate Comfort Score
57/100
Moderate
NOAA 1991–2020 normals 52°F annual avg Public-domain federal data
Klamath, CA Climate
Annual temperature, rainfall, and a comfort score, sourced from NOAA NCEI's 1991–2020 normals →
- 52°F
- Avg annual temp
- 57/100
- Comfort score
- 78.9"
- Annual precip
- 249d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Klamath
Klamath, California averages 52°F a year and scores 57/100 on the comfort index - moderate, milder than 37% of U.S. cities.
- 52°F
- annual average temperature (NOAA normal)
- 57/100
- comfort score, milder than 37% of U.S. cities
- 78.9"
- yearly precipitation total
- 249 days
- frost-free days per growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
52°F (11°C)
Avg High
61°F
Avg Low
44°F
Annual Precip
78.9"
Annual Snow
0.0"
Comfort Score
57/100
Moderate
Avg Annual Temperature
52°F
30-year mean (NOAA NCEI)
Annual Precipitation
78.9"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Klamath) 57.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Klamath area.
How Klamath compares to every U.S. city
Klamath's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
57 Top 63% higher than 37% of 6,915 US cities
Each bar is a band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Warming context for Klamath
MethodologySince 1900, U.S. land temperatures have tracked (and diverged from) the global mean - the chart below shows how. Klamath's current NOAA 1991-2020 normal sits within that longer spread, and the most recent decade runs warmer than the 30-year mean.
- United States land mean (NOAA NCEI) +0.11 °C/decade
- Global anomaly (NASA GISTEMP) +0.11 °C/decade
- Paris Agreement thresholds 1.5°C / 2.0°C
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 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 13.4"
18.4 days with precipitation
February 10.7"
16.5 days with precipitation
March 10.7"
15.8 days with precipitation
April 6.6"
15.5 days with precipitation
May 3.6"
9.6 days with precipitation
June 1.8"
5.2 days with precipitation
July 0.3"
2.0 days with precipitation
August 0.3"
1.9 days with precipitation
September 1.3"
2.8 days with precipitation
October 5.0"
7.0 days with precipitation
November 10.1"
15.6 days with precipitation
December 15.3"
17.8 days with precipitation
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
What Klamath's climate means for you
Klamath runs 52°F a year - peaking in July, coldest in December.
- Gardeners get about 249 frost-free days, with the last spring freeze near March 16 - plan the planting calendar around it, not the regional average.
- Energy bills track 4,602 heating and 7 cooling degree days a year, higher means the furnace or AC runs more.
- Comparing places to live? Line this city up against nearby cities and the national rankings. See rankings
These are 30-year NOAA normals (1991–2020) - the typical year, not a forecast for any specific season.
Climate Guides
Climate Insight: Klamath, CA
The NOAA 1991–2020 climate normals describe Klamath, California as a location with an annual average temperature of 52°F, ranging from a mean daily high of 61°F to a mean daily low of 44°F. July is typically the warmest month of the year, while December is the coldest. These thirty-year averages, computed from station USC00044577, smooth out year-to-year variability and give a baseline expectation for typical conditions in any given month.
Beyond temperature, Klamath averages 78.9 inches of precipitation annually, with negligible snowfall - a real factor for anyone planning to live, garden, or travel here. The frost-free season averages 249 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near March 16 and the first fall freeze near November 20. Turning to energy use, 4,602 heating degree days and 7 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Klamath scores 57/100 (Moderate), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above are the practical planning tool: mild highs and lows land in the shoulder seasons, July-driven heat peaks in summer, and December-driven cold sets in over deep winter. These are thirty-year averages, not a forecast - any single year can run warmer, wetter, drier, or cooler than the normal.
Frequently Asked Questions
What is the average temperature in Klamath, CA? ▼
The average annual temperature in Klamath, California is 52°F. The warmest month averages 67°F (19°C) and the coldest averages 38°F (3°C).
How much rain does Klamath get? ▼
Klamath receives 78.9 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Klamath? ▼
Klamath has a climate comfort score of 57/100 (Moderate), milder than 37% of U.S. cities in the PlainClimate database.
When is the growing season in Klamath? ▼
Klamath has approximately 249 frost-free days per year, with the last spring freeze around March 16 and the first fall freeze around November 20.
How much energy does heating and cooling require in Klamath? ▼
Klamath has 4,602 heating degree days and 7 cooling degree days annually, a heating-dominated climate. See our <a href="/guides/reading-weather-data/" class="underline hover:text-brand-600">guide to reading weather data</a> for what these figures mean.
Where does this Klamath climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00044577 near Klamath.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00044577. For informational purposes only.
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate Editorial
Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. This page draws directly on NOAA 1991-2020 U.S. Climate Normals data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.