Climate Comfort Score
90/100
Excellent
NOAA 1991–2020 normals 64°F annual avg Public-domain federal data
San Luis Dam, CA Climate
Average temperature, precipitation, and a comfort score, drawn from NOAA NCEI 1991–2020 normals →
- 64°F
- Avg annual temp
- 90/100
- Comfort score
- 10.4"
- Annual precip
- 318d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for San Luis Dam
San Luis Dam, California averages 64°F a year and scores 90/100 on the comfort index - excellent, milder than 94% of U.S. cities.
- 64°F
- annual average temperature (NOAA normal)
- 90/100
- comfort score, milder than 94% of U.S. cities
- 10.4"
- yearly precipitation total
- 318 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
75°F
Avg Low
52°F
Annual Precip
10.4"
Annual Snow
0.1"
Comfort Score
90/100
Excellent
Avg Annual Temperature
64°F
30-year mean (NOAA NCEI)
Annual Precipitation
10.4"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (San Luis Dam) 90.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Excellent for the San Luis Dam area.
How San Luis Dam compares to every U.S. city
San Luis Dam's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
90 Top 6% higher than 94% 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 San Luis Dam
MethodologyHow the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for San Luis 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 | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 56°F (14°C) | 39°F (4°C) | 48°F (9°C) | 2.2" | 0.1" | 5.8 | 0.0 |
| February | 62°F (17°C) | 43°F (6°C) | 52°F (11°C) | 2.0" | 0.0" | 1.2 | 0.0 |
| March | 67°F (19°C) | 47°F (8°C) | 57°F (14°C) | 1.6" | 0.0" | 0.1 | 0.0 |
| April | 73°F (23°C) | 50°F (10°C) | 61°F (16°C) | 0.5" | 0.0" | 0.0 | 0.5 |
| May | 80°F (27°C) | 56°F (13°C) | 68°F (20°C) | 0.7" | 0.0" | 0.0 | 5.1 |
| June | 88°F (31°C) | 60°F (16°C) | 74°F (23°C) | 0.1" | 0.0" | 0.0 | 11.4 |
| July | 93°F (34°C) | 65°F (18°C) | 79°F (26°C) | 0.0" | 0.0" | 0.0 | 20.2 |
| August | 93°F (34°C) | 64°F (18°C) | 78°F (26°C) | 0.0" | 0.0" | 0.0 | 20.8 |
| September | 89°F (32°C) | 61°F (16°C) | 75°F (24°C) | 0.0" | 0.0" | 0.0 | 14.3 |
| October | 79°F (26°C) | 54°F (12°C) | 67°F (19°C) | 0.5" | 0.0" | 0.0 | 3.3 |
| November | 66°F (19°C) | 45°F (7°C) | 55°F (13°C) | 1.0" | 0.0" | 0.7 | 0.0 |
| December | 57°F (14°C) | 39°F (4°C) | 48°F (9°C) | 1.7" | 0.0" | 4.6 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 2.2"
Snow: 0.1"
12.2 days with precipitation
February 2.0"
10.9 days with precipitation
March 1.6"
8.0 days with precipitation
April 0.5"
4.9 days with precipitation
May 0.7"
2.6 days with precipitation
June 0.1"
0.6 days with precipitation
July 0.0"
0.2 days with precipitation
August 0.0"
0.3 days with precipitation
September 0.0"
0.4 days with precipitation
October 0.5"
2.5 days with precipitation
November 1.0"
6.8 days with precipitation
December 1.7"
10.4 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
December 11
50% probability date
Last Spring Freeze
January 27
50% probability date
Growing Season
318 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
2,235
Higher = more heating needed
Cooling Degree Days
1,696
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What San Luis Dam's climate means for you
San Luis Dam runs 64°F a year - peaking in July, coldest in January.
- Gardeners get about 318 frost-free days, with the last spring freeze near January 27 - plan the planting calendar around it, not the regional average.
- Energy bills track 2,235 heating and 1,696 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: San Luis Dam, CA
San Luis Dam, California runs an annual average of 64°F, ranging from a mean daily high of 75°F to a mean daily low of 52°F, per NOAA's 1991–2020 climate normals. July is typically the warmest month of the year, while January is the coldest. Drawn from station USC00047846, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.
Anyone planning to live, garden, or travel in San Luis Dam should weigh precipitation alongside temperature: the annual average runs 10.4 inches, with negligible snowfall. The frost-free season averages 318 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near January 27 and the first fall freeze near December 11. And on the energy front, 2,235 heating degree days and 1,696 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, San Luis Dam scores 90/100 (Excellent), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Use the monthly tables above to plan around specific windows, shoulder seasons for mild highs and lows, peak summer for July-driven heat, or deep winter for January-driven cold. All figures here are thirty-year averages: any single year may run warmer, wetter, drier, or cooler than the normal, so treat them as planning guidance rather than forecasts.
Frequently Asked Questions
What is the average temperature in San Luis Dam, CA? ▼
The average annual temperature in San Luis Dam, California is 64°F. The warmest month averages 93°F (34°C) and the coldest averages 39°F (4°C).
How much rain does San Luis Dam get? ▼
San Luis Dam receives 10.4 inches of precipitation annually, including 0.1 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for San Luis Dam? ▼
San Luis Dam has a climate comfort score of 90/100 (Excellent), milder than 94% of U.S. cities in the PlainClimate database.
When is the growing season in San Luis Dam? ▼
San Luis Dam has approximately 318 frost-free days per year, with the last spring freeze around January 27 and the first fall freeze around December 11.
How much energy does heating and cooling require in San Luis Dam? ▼
San Luis Dam has 2,235 heating degree days and 1,696 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 San Luis Dam climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00047846 near San Luis Dam.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00047846. 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.