Hardly any U.S. towns collect less precipitation than Fallbrook: 13 inches a year
January mornings start at about 45°. From frosty January to warm July, readings climb 43°. Winters are mild: January nights here are milder than in 94% of U.S. towns. Comfortable outdoor weather lasts from October to June, with highs of 67–80°.
A year in Fallbrook at a glance
Each month’s typical high and low, and what it brings.
What stands out about Fallbrook’s climate
Compared with towns across the U.S., with Fallbrook’s place in California beside it.
What a year in Fallbrook feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
Frost is rare
Frost and day counts come from NOAA’s station at Fallbrook 5 Ne, CA, 5 miles from the town’s center, 450 ft higher.
The 2023 USDA map puts Fallbrook’s center in zone 10b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 35°. Plant labels use the zone; frost dates tell you when to plant.
90° days by month
Average days at 90° or more
About 13 inches of rain a year
February is the wettest month and August the driest. Rain falls on about 41 days a year. Snow is rare: about 0.0" in a normal year at Escondido #2, CA, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Fallbrook
49% of the work is heating, so air conditioning is the bigger bill. No month averages under 55°.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Fallbrook 5 Ne, CA.
Living with Fallbrook’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
Zone 10b. Frost comes about 1 winter in 6, so tender plants can often stay out through winter.
Months with highs of 62–84° and lows of 40° or more: January, February, March, April, May, June, October, November and December. 5.2 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Fallbrook from natural hazards, river flooding is the largest share (39%); heat waves, cold waves, winter storms and ice storms together are 5%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Fallbrook and similar climates
TownRatings has no climate map of the towns around Fallbrook yet.
Climates most like Fallbrook’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Fallbrook, CA | 45° | 86° | 13" | 0.0" |
| Ewa Beach, HI | 62° | 87° | 17" | 0.0" |
| Sierra Vista Southeast, AZ | 32° | 91° | 15" | 0.7" |
| The Dalles, OR | 31° | 88° | 15" | 5.5" |
| Alpine, TX | 30° | 90° | 15" | 2.2" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Fallbrook averaged 1.9° warmer than the 1900s. The biggest change is in January (+3.0°).
A bigger shift than in 83% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Fallbrook compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Fallbrook’s place among California’s.
Fallbrook weather by month
Highs, lows and precipitation from NOAA’s grid at Fallbrook’s center; snow, wet days and snow on the ground from Escondido #2, CA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 68° | 45° | 2.7" | 0.0" | 6 | 0 | 53° – 62° |
| February | 67° | 46° | 3.0" | 0.0" | 7 | 0 | 51° – 63° |
| March | 69° | 48° | 2.0" | 0.0" | 6 | 0 | 53° – 65° |
| April | 72° | 50° | 0.8" | 0.0" | 4 | 0 | 57° – 66° |
| May | 75° | 54° | 0.3" | 0.0" | 3 | 0 | 61° – 70° |
| June | 80° | 58° | 0.1" | 0.0" | 1 | 0 | 66° – 73° |
| July | 86° | 62° | 0.1" | 0.0" | 1 | 0 | 70° – 80° |
| August | 88° | 63° | 0.0" | 0.0" | 0 | 0 | 73° – 79° |
| September | 86° | 61° | 0.1" | 0.0" | 1 | 0 | 70° – 77° |
| October | 80° | 56° | 0.6" | 0.0" | 2 | 0 | 63° – 73° |
| November | 74° | 49° | 1.0" | 0.0" | 4 | 0 | 55° – 65° |
| December | 67° | 44° | 1.9" | 0.0" | 6 | 0 | 53° – 61° |
| Year | 76° | 53° | 12.5" | 0.0" | 41 | 0 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 51° to 63°. August is the most reliable, staying within 6°.
Where Fallbrook’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Fallbrook’s center.
- Snow: Escondido #2, CA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Fallbrook 5 Ne, CA, 5 miles from the town’s center, 450 ft higher; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Fallbrook’s climate
What is the weather like in Fallbrook?
A typical July afternoon reaches 86°, a January night drops to 45°, and snow is almost unheard of. Milder January nights than 94% of U.S. towns; hotter July afternoons than 52% of U.S. towns.
How cold does it get in Fallbrook in winter?
December nights average 44°. A night at 32° or below comes in only some winters (0.2 a year on average). In the coldest December of the last 30 years the month averaged 53°.
How much snow does Fallbrook get?
About 0.0 inches in a normal winter at Escondido #2, CA, so most winters see none.
How hot does it get in Fallbrook?
July, with a typical high of 86° and a low of 62°. About 60 days a year reach 90° and 9 reach 100° (Fallbrook 5 Ne, CA).
When is the first and last frost in Fallbrook?
Most years have no frost at all: a 32° night comes in about 17% of winters at Fallbrook 5 Ne, CA, usually in December or January.
What growing zone is Fallbrook in?
Zone 10b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 35°.
What is the best time of year to visit Fallbrook?
By one simple rule (highs of 62–84° and lows of 40° or more), January, February, March, April, May, June, October, November and December. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Fallbrook getting warmer?
Yes: 1991–2020 averaged 1.9° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 83% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Fallbrook.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.