Climate Comfort Score
74/100
Good
NOAA 1991–2020 normals 65°F annual avg Public-domain federal data
Fallbrook, CA Climate
Temperature, precipitation, and comfort score from NOAA NCEI 1991–2020 normals →
- 65°F
- Avg annual temp
- 74/100
- Comfort score
- 15.3"
- Annual precip
- -3d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Fallbrook
Fallbrook, California averages 65°F a year and scores 74/100 on the comfort index - good, milder than 71% of U.S. cities.
- 65°F
- average temperature, NOAA 1991-2020 normal
- 74/100
- comfort score, milder than 71% of U.S. cities
- 15.3"
- precipitation, annual total
- -3 days
- frost-free days per growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
65°F (18°C)
Avg High
77°F
Avg Low
53°F
Annual Precip
15.3"
Comfort Score
74/100
Good
Avg Annual Temperature
65°F
30-year mean (NOAA NCEI)
Annual Precipitation
15.3"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Fallbrook) 74.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Fallbrook area.
How Fallbrook compares to every U.S. city
Fallbrook's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
74 Top 29% higher than 71% 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 Fallbrook
MethodologyThe chart below traces how the U.S. land temperature anomaly has moved against the global mean since 1900. For Fallbrook, the NOAA 1991-2020 normal captures average conditions across that spread - notably, the most recent decade runs warmer than the 30-year mean itself.
- 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 | 68°F (20°C) | 47°F (9°C) | 57°F (14°C) | 3.2" | 0.2 | 0.1 |
| February | 67°F (19°C) | 46°F (8°C) | 57°F (14°C) | 3.7" | 0.0 | 0.2 |
| March | 70°F (21°C) | 48°F (9°C) | 59°F (15°C) | 2.0" | 0.0 | 0.7 |
| April | 72°F (22°C) | 51°F (10°C) | 61°F (16°C) | 1.0" | 0.0 | 2.0 |
| May | 75°F (24°C) | 53°F (12°C) | 64°F (18°C) | 0.4" | 0.0 | 1.9 |
| June | 81°F (27°C) | 56°F (13°C) | 68°F (20°C) | 0.1" | 0.0 | 4.5 |
| July | 87°F (31°C) | 60°F (16°C) | 74°F (23°C) | 0.1" | 0.0 | 10.2 |
| August | 89°F (32°C) | 62°F (17°C) | 76°F (24°C) | 0.2" | 0.0 | 14.4 |
| September | 88°F (31°C) | 62°F (17°C) | 75°F (24°C) | 0.1" | 0.0 | 14.2 |
| October | 83°F (28°C) | 58°F (14°C) | 71°F (21°C) | 0.7" | 0.0 | 8.8 |
| November | 74°F (24°C) | 52°F (11°C) | 63°F (17°C) | 1.1" | 0.0 | 3.5 |
| December | 67°F (19°C) | 46°F (8°C) | 57°F (14°C) | 2.6" | 0.1 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January 3.2"
5.7 days with precipitation
February 3.7"
6.4 days with precipitation
March 2.0"
6.3 days with precipitation
April 1.0"
4.2 days with precipitation
May 0.4"
4.5 days with precipitation
June 0.1"
2.3 days with precipitation
July 0.1"
1.6 days with precipitation
August 0.2"
1.4 days with precipitation
September 0.1"
1.8 days with precipitation
October 0.7"
3.1 days with precipitation
November 1.1"
4.6 days with precipitation
December 2.6"
6.5 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
January 30
50% probability date
Last Spring Freeze
February 2
50% probability date
Growing Season
-3 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
1,368
Higher = more heating needed
Cooling Degree Days
1,412
Higher = more cooling needed
Warmest Month
August
Coldest Month
February
What Fallbrook's climate means for you
Fallbrook runs 65°F a year - peaking in August, coldest in February.
- Gardeners get about -3 frost-free days, with the last spring freeze near February 2 - plan the planting calendar around it, not the regional average.
- Energy bills track 1,368 heating and 1,412 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: Fallbrook, CA
In Fallbrook, California, the NOAA 1991–2020 climate normals put the annual average temperature at 65°F, ranging from a mean daily high of 77°F to a mean daily low of 53°F. August is typically the warmest month of the year, while February is the coldest. As thirty-year averages computed from station USW00053151, 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. Fallbrook sees about 15.3 inches of precipitation a year, predominantly as rainfall. The frost-free season averages -3 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near February 2 and the first fall freeze near January 30. On the energy side, 1,368 heating degree days and 1,412 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Fallbrook scores 74/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Shoulder seasons bring the mildest highs and lows in the monthly tables above, summer brings August-driven heat, and winter brings February-driven cold - use that rhythm for planning. These figures are thirty-year averages rather than forecasts, so a specific year may still run warmer, cooler, wetter, or drier than what's shown.
Frequently Asked Questions
What is the average temperature in Fallbrook, CA? ▼
The average annual temperature in Fallbrook, California is 65°F. The warmest month averages 89°F (32°C) and the coldest averages 46°F (8°C).
How much rain does Fallbrook get? ▼
Fallbrook receives 15.3 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Fallbrook? ▼
Fallbrook has a climate comfort score of 74/100 (Good), milder than 71% of U.S. cities in the PlainClimate database.
When is the growing season in Fallbrook? ▼
Fallbrook has approximately -3 frost-free days per year, with the last spring freeze around February 2 and the first fall freeze around January 30.
How much energy does heating and cooling require in Fallbrook? ▼
Fallbrook has 1,368 heating degree days and 1,412 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 Fallbrook climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USW00053151 near Fallbrook.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USW00053151. 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.