PlainClimate
NOAA 1991–2020 normals 62°F annual avg Public-domain federal data

Fairmont, CA Climate

Average temperature, precipitation, and a comfort score, drawn from NOAA NCEI 1991–2020 normals →

62°F
Avg annual temp
83/100
Comfort score
15.8"
Annual precip
237d
Growing season

30-year climate normals from 1 weather station (1991-2020).

The climate verdict for Fairmont

Fairmont, California averages 62°F a year and scores 83/100 on the comfort index - excellent, milder than 85% of U.S. cities.

62°F
annual average temperature (NOAA normal)
83/100
comfort score, milder than 85% of U.S. cities
15.8"
annual precipitation · 1" snow
237 days
growing season, frost-free days

Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.

Avg Temperature

62°F (17°C)

Avg High

73°F

Avg Low

51°F

Annual Precip

15.8"

Annual Snow

1.3"

Comfort Score

83/100

Excellent

Climate Comfort Score

83/100

Excellent

Avg Annual Temperature

62°F

30-year mean (NOAA NCEI)

Annual Precipitation

15.8"

Plus 1.3" of snow

Comfort score vs national 100-point ceiling (Fairmont) 83.0%
National median (63)

PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Excellent for the Fairmont area.

How Fairmont compares to every U.S. city

Fairmont's comfort score vs. all U.S. cities

PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals

83 Top 15% higher than 85% of 6,915 US cities

0–10: 0 US cities (0%). Below this entry. 10–20: 0 US cities (0%). Below this entry. 20–30: 58 US cities (1%). Below this entry. 30–40: 439 US cities (6%). Below this entry. 40–50: 1,302 US cities (19%). Below this entry. 50–60: 1,433 US cities (21%). Below this entry. 60–70: 1,357 US cities (20%). Below this entry. 70–80: 1,102 US cities (16%). Below this entry. 80–90: 778 US cities (11%). This entry sits in this band. 90–100: 420 US cities (6%). Above this entry. This city 0 100 every U.S. city, bucketed by value

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 Fairmont

Methodology

Since 1900, U.S. land temperatures have tracked (and diverged from) the global mean - the chart below shows how. Fairmont's current NOAA 1991-2020 normal sits within that longer spread, and the most recent decade runs warmer than the 30-year mean.

Warming context, U.S. vs global, with Paris reference lines Anomaly chart from 1900 to 2024. Local series shows warming of 0.11 °C per decade versus a global rate of 0.11 °C per decade (ratio 1.00). Paris Agreement thresholds at 1.5 and 2.0 °C are dashed. -1.0°C -0.5°C +0.0°C +0.5°C +1.0°C +1.5°C +2.0°C +2.5°C Paris 1.5°C Paris 2.0°C 1900192019401960198020002020
  • 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
Sources: NOAA NCEI, NASA GISTEMP. Paris thresholds per IPCC AR6 WG1.

Monthly Temperatures

Average daily high and low temperatures by month

Month Avg High Avg Low Mean
January 56°F (13°C) 38°F (3°C) 47°F (8°C)
February 58°F (14°C) 39°F (4°C) 49°F (9°C)
March 63°F (17°C) 43°F (6°C) 53°F (12°C)
April 68°F (20°C) 46°F (8°C) 57°F (14°C)
May 76°F (24°C) 53°F (12°C) 65°F (18°C)
June 86°F (30°C) 62°F (17°C) 74°F (23°C)
July 92°F (33°C) 68°F (20°C) 80°F (27°C)
August 93°F (34°C) 68°F (20°C) 81°F (27°C)
September 88°F (31°C) 62°F (17°C) 75°F (24°C)
October 77°F (25°C) 53°F (12°C) 65°F (18°C)
November 65°F (18°C) 44°F (6°C) 54°F (12°C)
December 55°F (13°C) 37°F (3°C) 46°F (8°C)

Monthly Precipitation

Average monthly rainfall and snowfall

January 3.7"

6.9 days with precipitation

February 4.4"

Snow: 0.7"

7.2 days with precipitation

March 2.5"

Snow: 0.2"

6.7 days with precipitation

April 0.9"

3.5 days with precipitation

May 0.4"

2.1 days with precipitation

June 0.1"

0.5 days with precipitation

July 0.1"

0.6 days with precipitation

August 0.0"

0.4 days with precipitation

September 0.1"

1.0 days with precipitation

October 0.7"

1.8 days with precipitation

November 0.7"

3.4 days with precipitation

December 2.2"

Snow: 0.4"

5.2 days with precipitation

Frost Dates & Growing Season

First Fall Freeze

November 29

50% probability date

Last Spring Freeze

April 6

50% probability date

Growing Season

237 days

Heating & Cooling Degree Days

Annual totals indicate energy demand for heating and cooling

Heating Degree Days

2,872

Higher = more heating needed

Cooling Degree Days

1,805

Higher = more cooling needed

Warmest Month

August

Coldest Month

December

What Fairmont's climate means for you

Fairmont runs 62°F a year - peaking in August, coldest in December.

  • Gardeners get about 237 frost-free days, with the last spring freeze near April 6 - plan the planting calendar around it, not the regional average.
  • Energy bills track 2,872 heating and 1,805 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: Fairmont, CA

Fairmont, California runs an annual average of 62°F, ranging from a mean daily high of 73°F to a mean daily low of 51°F, per NOAA's 1991–2020 climate normals. August is typically the warmest month of the year, while December is the coldest. Drawn from station USC00042941, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.

Rainfall (and snow, where it falls) shapes day-to-day life here as much as temperature does. Fairmont sees about 15.8 inches of precipitation a year, with 1.3 inches typically falling as snow. The frost-free season averages 237 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 6 and the first fall freeze near November 29. On the energy side, 2,872 heating degree days and 1,805 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Fairmont scores 83/100 (Excellent), 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, August-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 Fairmont, CA?
The average annual temperature in Fairmont, California is 62°F. The warmest month averages 93°F (34°C) and the coldest averages 37°F (3°C).
How much rain does Fairmont get?
Fairmont receives 15.8 inches of precipitation annually, including 1.3 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Fairmont?
Fairmont has a climate comfort score of 83/100 (Excellent), milder than 85% of U.S. cities in the PlainClimate database.
When is the growing season in Fairmont?
Fairmont has approximately 237 frost-free days per year, with the last spring freeze around April 6 and the first fall freeze around November 29.
How much energy does heating and cooling require in Fairmont?
Fairmont has 2,872 heating degree days and 1,805 cooling degree days annually, a fairly balanced heating/cooling split. 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 Fairmont climate data come from?
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00042941 near Fairmont.

Data Sources

Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00042941. For informational purposes only.

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.