Climate Comfort Score
64/100
Good
NOAA 1991–2020 normals 50°F annual avg 2 stations
MT Shasta, CA Climate
Pulled from NOAA NCEI 1991–2020 normals →: average temperature, precipitation, and comfort score
- 50°F
- Avg annual temp
- 64/100
- Comfort score
- 37.6"
- Annual precip
- 159d
- Growing season
30-year climate normals from 2 weather stations (1991-2020).
The climate verdict for MT Shasta
MT Shasta, California averages 50°F a year and scores 64/100 on the comfort index - good, milder than 51% of U.S. cities.
- 50°F
- average temperature, NOAA 1991-2020 normal
- 64/100
- comfort score, milder than 51% of U.S. cities
- 37.6"
- yearly precipitation total
- 159 days
- frost-free growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
50°F (10°C)
Avg High
63°F
Avg Low
38°F
Annual Precip
37.6"
Comfort Score
64/100
Good
Avg Annual Temperature
50°F
30-year mean (NOAA NCEI)
Annual Precipitation
37.6"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (MT Shasta) 64.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the MT Shasta area.
How MT Shasta compares to every U.S. city
MT Shasta's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
64 Top 49% higher than 51% 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 MT Shasta
MethodologyMT Shasta's NOAA 1991-2020 normal sits inside a longer story: U.S. land temperatures have been tracking (and drifting from) the global mean since 1900, and the chart below shows that spread, with the most recent decade running 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 | 44°F (7°C) | 29°F (-2°C) | 36°F (2°C) | 6.3" | N/A | 23.4 | 0.0 |
| February | 47°F (8°C) | 29°F (-2°C) | 38°F (3°C) | 6.4" | N/A | 21.0 | 0.0 |
| March | 53°F (11°C) | 32°F (0°C) | 42°F (6°C) | 5.6" | N/A | 18.3 | 0.0 |
| April | 59°F (15°C) | 35°F (2°C) | 47°F (8°C) | 2.9" | N/A | 10.7 | 0.0 |
| May | 69°F (20°C) | 41°F (5°C) | 55°F (13°C) | 2.1" | N/A | 2.1 | 0.5 |
| June | 76°F (24°C) | 47°F (8°C) | 62°F (16°C) | 1.1" | N/A | 0.2 | 2.8 |
| July | 85°F (30°C) | 52°F (11°C) | 68°F (20°C) | 0.3" | N/A | 0.0 | 11.9 |
| August | 85°F (29°C) | 50°F (10°C) | 67°F (20°C) | 0.2" | N/A | 0.0 | 9.1 |
| September | 78°F (26°C) | 45°F (7°C) | 62°F (16°C) | 0.5" | N/A | 0.5 | 3.1 |
| October | 65°F (18°C) | 38°F (3°C) | 51°F (11°C) | 2.0" | N/A | 6.2 | 0.0 |
| November | 51°F (10°C) | 31°F (0°C) | 41°F (5°C) | 3.6" | N/A | 18.1 | 0.0 |
| December | 42°F (6°C) | 28°F (-2°C) | 35°F (2°C) | 6.6" | N/A | 24.1 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 6.3"
12.1 days with precipitation
February 6.4"
12.1 days with precipitation
March 5.6"
12.8 days with precipitation
April 2.9"
10.9 days with precipitation
May 2.1"
8.4 days with precipitation
June 1.1"
4.1 days with precipitation
July 0.3"
1.8 days with precipitation
August 0.2"
1.8 days with precipitation
September 0.5"
2.9 days with precipitation
October 2.0"
5.9 days with precipitation
November 3.6"
10.4 days with precipitation
December 6.6"
12.9 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 12
50% probability date
Last Spring Freeze
May 6
50% probability date
Growing Season
159 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
5,628
Higher = more heating needed
Cooling Degree Days
309
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Humidity & Wind
Monthly averages from hourly observations
| Month | Humidity | Wind (mph) | Clear Sky % | Overcast % |
|---|---|---|---|---|
| January | 71% | 3.2 | N/A | N/A |
| February | 68% | 3.4 | N/A | N/A |
| March | 62% | 3.9 | N/A | N/A |
| April | 54% | 4.0 | N/A | N/A |
| May | 54% | 3.6 | N/A | N/A |
| June | 48% | 3.1 | N/A | N/A |
| July | 46% | 2.2 | N/A | N/A |
| August | 46% | 2.6 | N/A | N/A |
| September | 52% | 2.8 | N/A | N/A |
| October | 64% | 2.9 | N/A | N/A |
| November | 73% | 3.1 | N/A | N/A |
| December | 73% | 3.2 | N/A | N/A |
What MT Shasta's climate means for you
MT Shasta runs 50°F a year - peaking in July, coldest in December.
- Gardeners get about 159 frost-free days, with the last spring freeze near May 6 - plan the planting calendar around it, not the regional average.
- Energy bills track 5,628 heating and 309 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: MT Shasta, CA
Based on 2 weather stations feeding NOAA's 1991–2020 climate normals, MT Shasta, California averages 50°F a year, ranging from a mean daily high of 63°F to a mean daily low of 38°F. July is typically the warmest month of the year, while December is the coldest. Because these figures are thirty-year averages rather than any single year's readings, they describe the typical month, not a forecast for it.
Anyone planning to live, garden, or travel in MT Shasta should weigh precipitation alongside temperature: the annual average runs 37.6 inches, with seasonal snowfall possible. The frost-free season averages 159 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 6 and the first fall freeze near October 12. And on the energy front, 5,628 heating degree days and 309 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, MT Shasta scores 64/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. For planning purposes, look to the monthly tables above: shoulder seasons bring the mildest highs and lows, summer brings July-driven heat, and deep winter brings December-driven cold. Treat every figure here as a thirty-year average rather than a forecast - individual years routinely run warmer, cooler, wetter, or drier than the normal.
Frequently Asked Questions
What is the average temperature in MT Shasta, CA? ▼
The average annual temperature in MT Shasta, California is 50°F. The warmest month averages 85°F (30°C) and the coldest averages 28°F (-2°C).
How much rain does MT Shasta get? ▼
MT Shasta receives 37.6 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for MT Shasta? ▼
MT Shasta has a climate comfort score of 64/100 (Good), milder than 51% of U.S. cities in the PlainClimate database.
When is the growing season in MT Shasta? ▼
MT Shasta has approximately 159 frost-free days per year, with the last spring freeze around May 6 and the first fall freeze around October 12.
How much energy does heating and cooling require in MT Shasta? ▼
MT Shasta has 5,628 heating degree days and 309 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 MT Shasta climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from 2 weather stations near MT Shasta.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USW00024215. 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.