Climate Comfort Score
75/100
Good
NOAA 1991–2020 normals 64°F annual avg Public-domain federal data
Shasta Dam, CA Climate
Average temperature, precipitation, and a comfort score, drawn from NOAA NCEI 1991–2020 normals →
- 64°F
- Avg annual temp
- 75/100
- Comfort score
- 63.0"
- Annual precip
- 323d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Shasta Dam
Shasta Dam, California averages 64°F a year and scores 75/100 on the comfort index - good, milder than 72% of U.S. cities.
- 64°F
- annual average temperature (NOAA normal)
- 75/100
- comfort score, milder than 72% of U.S. cities
- 63.0"
- yearly precipitation total
- 323 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
64°F (18°C)
Avg High
74°F
Avg Low
53°F
Annual Precip
63.0"
Comfort Score
75/100
Good
Avg Annual Temperature
64°F
30-year mean (NOAA NCEI)
Annual Precipitation
63.0"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Shasta Dam) 75.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Shasta Dam area.
How Shasta Dam compares to every U.S. city
Shasta Dam's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
75 Top 28% higher than 72% 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 Shasta Dam
MethodologyHow the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Shasta Dam 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 | 55°F (13°C) | 41°F (5°C) | 48°F (9°C) | 10.5" | 2.1 | 0.0 |
| February | 59°F (15°C) | 42°F (5°C) | 50°F (10°C) | 11.4" | 1.0 | 0.0 |
| March | 63°F (17°C) | 44°F (7°C) | 54°F (12°C) | 9.2" | 0.2 | 0.0 |
| April | 70°F (21°C) | 48°F (9°C) | 59°F (15°C) | 4.6" | 0.2 | 0.3 |
| May | 79°F (26°C) | 55°F (13°C) | 67°F (19°C) | 2.9" | 0.0 | 4.5 |
| June | 88°F (31°C) | 63°F (17°C) | 76°F (24°C) | 1.5" | 0.0 | 13.8 |
| July | 97°F (36°C) | 69°F (21°C) | 83°F (28°C) | 0.1" | 0.0 | 26.1 |
| August | 96°F (36°C) | 68°F (20°C) | 82°F (28°C) | 0.2" | 0.0 | 25.3 |
| September | 90°F (32°C) | 63°F (17°C) | 77°F (25°C) | 0.5" | 0.0 | 16.6 |
| October | 78°F (25°C) | 55°F (13°C) | 66°F (19°C) | 3.4" | 0.0 | 3.0 |
| November | 62°F (17°C) | 46°F (8°C) | 54°F (12°C) | 6.6" | 0.2 | 0.0 |
| December | 54°F (12°C) | 41°F (5°C) | 47°F (9°C) | 12.0" | 1.9 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January 10.5"
13.9 days with precipitation
February 11.4"
12.7 days with precipitation
March 9.2"
13.3 days with precipitation
April 4.6"
9.6 days with precipitation
May 2.9"
7.8 days with precipitation
June 1.5"
3.3 days with precipitation
July 0.1"
0.6 days with precipitation
August 0.2"
0.7 days with precipitation
September 0.5"
1.8 days with precipitation
October 3.4"
5.0 days with precipitation
November 6.6"
10.3 days with precipitation
December 12.0"
13.5 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
December 28
50% probability date
Last Spring Freeze
February 8
50% probability date
Growing Season
323 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
2,582
Higher = more heating needed
Cooling Degree Days
2,071
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
What Shasta Dam's climate means for you
Shasta Dam runs 64°F a year - peaking in July, coldest in December.
- Gardeners get about 323 frost-free days, with the last spring freeze near February 8 - plan the planting calendar around it, not the regional average.
- Energy bills track 2,582 heating and 2,071 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: Shasta Dam, CA
Shasta Dam, California runs an annual average of 64°F, ranging from a mean daily high of 74°F to a mean daily low of 53°F, per NOAA's 1991–2020 climate normals. July is typically the warmest month of the year, while December is the coldest. Drawn from station USC00048135, 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. Shasta Dam sees about 63.0 inches of precipitation a year, predominantly as rainfall. The frost-free season averages 323 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near February 8 and the first fall freeze near December 28. On the energy side, 2,582 heating degree days and 2,071 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Shasta Dam scores 75/100 (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 Shasta Dam, CA? ▼
The average annual temperature in Shasta Dam, California is 64°F. The warmest month averages 97°F (36°C) and the coldest averages 41°F (5°C).
How much rain does Shasta Dam get? ▼
Shasta Dam receives 63.0 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Shasta Dam? ▼
Shasta Dam has a climate comfort score of 75/100 (Good), milder than 72% of U.S. cities in the PlainClimate database.
When is the growing season in Shasta Dam? ▼
Shasta Dam has approximately 323 frost-free days per year, with the last spring freeze around February 8 and the first fall freeze around December 28.
How much energy does heating and cooling require in Shasta Dam? ▼
Shasta Dam has 2,582 heating degree days and 2,071 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 Shasta Dam climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00048135 near Shasta Dam.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00048135. 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.