Climate Comfort Score
54/100
Moderate
NOAA 1991–2020 normals 44°F annual avg Public-domain federal data
Mammoth Lakes RS, CA Climate
Explore average temperature, rainfall, and comfort score sourced from NOAA NCEI's 1991–2020 climate normals →
- 44°F
- Avg annual temp
- 54/100
- Comfort score
- 23.7"
- Annual precip
- 99d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Mammoth Lakes RS
Mammoth Lakes RS, California averages 44°F a year and scores 54/100 on the comfort index - moderate, milder than 27% of U.S. cities.
- 44°F
- annual average temperature (NOAA normal)
- 54/100
- comfort score, milder than 27% of U.S. cities
- 23.7"
- yearly precipitation total
- 99 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
44°F (7°C)
Avg High
57°F
Avg Low
31°F
Annual Precip
23.7"
Comfort Score
54/100
Moderate
Avg Annual Temperature
44°F
30-year mean (NOAA NCEI)
Annual Precipitation
23.7"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Mammoth Lakes RS) 54.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Mammoth Lakes RS area.
How Mammoth Lakes RS compares to every U.S. city
Mammoth Lakes RS's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
54 Top 73% higher than 27% 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 Mammoth Lakes RS
MethodologyHow the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Mammoth Lakes RS captures average conditions across the spread shown, the most recent decade is 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 | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 41°F (5°C) | 17°F (-9°C) | 29°F (-2°C) | 4.2" | 30.4 | 0.0 |
| February | 41°F (5°C) | 18°F (-8°C) | 29°F (-1°C) | 3.8" | 27.4 | 0.0 |
| March | 46°F (8°C) | 22°F (-5°C) | 34°F (1°C) | 3.3" | 28.8 | 0.0 |
| April | 51°F (11°C) | 27°F (-3°C) | 39°F (4°C) | 1.5" | 23.3 | 0.0 |
| May | 60°F (16°C) | 35°F (1°C) | 47°F (9°C) | 1.5" | 14.3 | 0.0 |
| June | 70°F (21°C) | 42°F (6°C) | 56°F (13°C) | 0.5" | 3.4 | 0.0 |
| July | 78°F (25°C) | 49°F (9°C) | 63°F (17°C) | 0.5" | 0.1 | 0.3 |
| August | 77°F (25°C) | 47°F (9°C) | 62°F (17°C) | 0.5" | 0.1 | 0.0 |
| September | 71°F (22°C) | 40°F (4°C) | 56°F (13°C) | 0.5" | 5.1 | 0.0 |
| October | 61°F (16°C) | 30°F (-1°C) | 46°F (8°C) | 1.4" | 21.9 | 0.0 |
| November | 49°F (10°C) | 23°F (-5°C) | 36°F (2°C) | 2.0" | 25.8 | 0.0 |
| December | 41°F (5°C) | 17°F (-8°C) | 29°F (-2°C) | 4.1" | 29.6 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January 4.2"
February 3.8"
March 3.3"
April 1.5"
May 1.5"
June 0.5"
July 0.5"
August 0.5"
September 0.5"
October 1.4"
November 2.0"
December 4.1"
Frost Dates & Growing Season
First Fall Freeze
September 17
50% probability date
Last Spring Freeze
June 10
50% probability date
Growing Season
99 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,722
Higher = more heating needed
Cooling Degree Days
65
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Mammoth Lakes RS's climate means for you
Mammoth Lakes RS runs 44°F a year - peaking in July, coldest in January.
- Gardeners get about 99 frost-free days, with the last spring freeze near June 10 - plan the planting calendar around it, not the regional average.
- Energy bills track 7,722 heating and 65 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: Mammoth Lakes RS, CA
In Mammoth Lakes RS, California, the NOAA 1991–2020 climate normals put the annual average temperature at 44°F, ranging from a mean daily high of 57°F to a mean daily low of 31°F. July is typically the warmest month of the year, while January is the coldest. As thirty-year averages computed from station USC00045280, these numbers smooth out year-to-year noise into a working baseline for a typical month.
Rainfall (and snow, where it falls) shapes day-to-day life here as much as temperature does. Mammoth Lakes RS sees about 23.7 inches of precipitation a year, predominantly as rainfall. The frost-free season averages 99 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near June 10 and the first fall freeze near September 17. On the energy side, 7,722 heating degree days and 65 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Mammoth Lakes RS scores 54/100 (Moderate), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above turn that into a planning tool: expect the mildest highs and lows in the shoulder seasons, July-driven heat at the peak of summer, and January-driven cold at the depth of winter. Every number here is a thirty-year average, not a forecast, so any given year can and does run warmer, cooler, wetter, or drier than the normal.
Frequently Asked Questions
What is the average temperature in Mammoth Lakes RS, CA? ▼
The average annual temperature in Mammoth Lakes RS, California is 44°F. The warmest month averages 78°F (25°C) and the coldest averages 17°F (-9°C).
How much rain does Mammoth Lakes RS get? ▼
Mammoth Lakes RS receives 23.7 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Mammoth Lakes RS? ▼
Mammoth Lakes RS has a climate comfort score of 54/100 (Moderate), milder than 27% of U.S. cities in the PlainClimate database.
When is the growing season in Mammoth Lakes RS? ▼
Mammoth Lakes RS has approximately 99 frost-free days per year, with the last spring freeze around June 10 and the first fall freeze around September 17.
How much energy does heating and cooling require in Mammoth Lakes RS? ▼
Mammoth Lakes RS has 7,722 heating degree days and 65 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 Mammoth Lakes RS climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00045280 near Mammoth Lakes RS.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00045280. 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.