Photo: User:Jstroudr · CC BY-SA 3.0Hemet reaches 100° on about 39 days a year, more than 98% of U.S. towns
January nights here settle around 38°. Its yearly precipitation falls short of 96% of U.S. towns. Warming shows here too: 2.1° more than in 1901–2000, led by January. Comfortable outdoor weather lasts from March to May and October to November, with highs of 71–83°.
A year in Hemet at a glance
Each month’s typical high and low, and what it brings.
What stands out about Hemet’s climate
Compared with towns across the U.S., with Hemet’s place in California beside it.
What a year in Hemet feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 315 frost-free days a year
In half of years the last 32° night comes by January 31 and the first by December 10. Frost and day counts come from NOAA’s station at San Jacinto, CA, 4 miles from the city’s center point, at about the same height.
The 2023 USDA map puts Hemet’s center in zone 9b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 27°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 12 inches of rain a year
February is the wettest month and June the driest. Rain falls on about 35 days a year. Snow is rare: about 0.0" in a normal year at San Jacinto, CA, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Hemet
50% of the work is heating, so air conditioning is the bigger bill. Months averaging under 55° run from December through February.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at San Jacinto, CA.
Living with Hemet’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
315 frost-free days in zone 9b. The last frost comes by Jan 31 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Dec 10.
Months with highs of 62–84° and lows of 40° or more: March, April, May, October and November. 10 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Hemet from natural hazards, earthquakes are the largest share (54%); heat waves, cold waves, winter storms and ice storms together are 1%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Hemet and its neighbors
Every town next door is within a degree of Hemet in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Hemet’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 |
|---|---|---|---|---|
| Hemet, CA | 38° | 97° | 12" | 0.0" |
| Green Valley, AZ | 36° | 97° | 13" | 0.1" |
| Del Rio, TX | 40° | 98° | 19" | 0.2" |
| Anthony, NM | 31° | 96° | 9" | 0.0" |
| Ivins, UT | 32° | 100° | 11" | 1.2" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Hemet averaged 2.1° warmer than the 1900s. The biggest change is in January (+3.1°).
A bigger shift than in 93% 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 Hemet compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Hemet’s place among California’s.
Hemet weather by month
Highs, lows and precipitation from NOAA’s grid at Hemet’s center; snow, wet days and snow on the ground from San Jacinto, CA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 67° | 38° | 2.6" | 0.0" | 6 | 0 | 48° – 60° |
| February | 68° | 40° | 2.9" | 0.0" | 6 | 0 | 48° – 61° |
| March | 71° | 43° | 1.7" | 0.0" | 5 | 0 | 50° – 64° |
| April | 76° | 46° | 0.8" | 0.0" | 3 | 0 | 55° – 65° |
| May | 82° | 51° | 0.3" | 0.0" | 2 | 0 | 59° – 72° |
| June | 91° | 56° | 0.1" | 0.0" | 0 | 0 | 66° – 78° |
| July | 97° | 61° | 0.1" | 0.0" | 1 | 0 | 72° – 85° |
| August | 98° | 62° | 0.1" | 0.0" | 1 | 0 | 77° – 84° |
| September | 93° | 58° | 0.3" | 0.0" | 1 | 0 | 71° – 80° |
| October | 83° | 50° | 0.5" | 0.0" | 2 | 0 | 62° – 72° |
| November | 74° | 43° | 0.8" | 0.0" | 3 | 0 | 50° – 63° |
| December | 66° | 37° | 1.7" | 0.0" | 5 | 0 | 47° – 58° |
| Year | 80° | 49° | 11.8" | 0.0" | 35 | 0 |
How much a month can swing
A normal is an average. March swings the most: from 1991 to 2020 its average ranged from 50° to 64°. August is the most reliable, staying within 7°.
Where Hemet’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 Hemet’s center.
- Snow: San Jacinto, CA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: San Jacinto, CA, 4 miles from the city’s center point, at about the same height; 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 Hemet’s climate
What is the weather like in Hemet?
A typical July afternoon reaches 97°, a January night drops to 38°, and snow is almost unheard of. Milder January nights than 86% of U.S. towns; hotter July afternoons than 98% of U.S. towns.
How cold does it get in Hemet in winter?
December nights average 37°. About 15 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 47°.
How much snow does Hemet get?
About 0.0 inches in a normal winter at San Jacinto, CA, so most winters see none.
How hot does it get in Hemet?
July, with a typical high of 97° and a low of 61°. About 120 days a year reach 90° and 39 reach 100° (San Jacinto, CA).
When is the first and last frost in Hemet?
In half of years the last spring frost (32°) comes by January 31 and the first fall frost by December 10, about 315 frost-free days, at San Jacinto, CA.
What growing zone is Hemet in?
Zone 9b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 27°.
What is the best time of year to visit Hemet?
By one simple rule (highs of 62–84° and lows of 40° or more), March, April, May, October and November. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Hemet getting warmer?
Yes: 1991–2020 averaged 2.1° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 93% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Hemet.
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.