Photo: Johnwayne Stroud · CC BY-SA 3.0Calimesa’s winters are milder and less snowy than most of the U.S.
A typical July afternoon reaches 96°, a January night drops to 41°, and snow is almost unheard of.
A year in Calimesa at a glance
Each month’s typical high and low, and what it brings.
What stands out about Calimesa’s climate
Compared with towns across the U.S., with Calimesa’s place in California beside it.
What a year in Calimesa feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 26 days a year reach 100°
And 104 days reach 90°. Frost and day counts come from Redlands, CA, 9 miles away.
The 2023 USDA map puts Calimesa’s center in zone 9b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 28°. 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 17 inches of rain a year
February is the wettest month and August the driest. Rain falls on about 43 days a year. Snow is rare: about 0.0" in a normal year at Redlands, CA, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Calimesa
48% 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 Redlands, CA.
Living with Calimesa’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
Zone 9b. Frost comes about 9 winters in 10, so the growing year is set by heat, not cold: 26 days at 100° make midsummer the hard season for gardens.
Months with highs of 62–84° and lows of 40° or more: January, February, March, April, May, October and November. 8.4 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Calimesa from natural hazards, wildfire is the largest share (52%); heat waves, cold waves, winter storms and ice storms together are 1%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Calimesa and its neighbors
Every town next door is within a degree of Calimesa in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Calimesa’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 |
|---|---|---|---|---|
| Calimesa, CA | 41° | 96° | 17" | 0.0" |
| Corona de Tucson, AZ | 36° | 96° | 14" | 0.1" |
| Del Rio, TX | 40° | 98° | 19" | 0.2" |
| Anthony, NM | 31° | 96° | 9" | 0.0" |
| Medford, OR | 32° | 92° | 19" | 3.4" |
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 Calimesa averaged 2.0° warmer than the 1900s. The biggest change is in January (+3.0°).
A bigger shift than in 88% 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 Calimesa compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Calimesa’s place among California’s.
Calimesa weather by month
Highs, lows and precipitation from NOAA’s grid at Calimesa’s center; snow, wet days and snow on the ground from Redlands, CA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 65° | 41° | 3.4" | 0.0" | 7 | 0 | 48° – 60° |
| February | 65° | 42° | 3.7" | 0.0" | 8 | 0 | 46° – 62° |
| March | 69° | 45° | 2.9" | 0.0" | 6 | 0 | 50° – 64° |
| April | 74° | 47° | 1.3" | 0.0" | 4 | 0 | 55° – 64° |
| May | 80° | 51° | 0.5" | 0.0" | 3 | 0 | 59° – 72° |
| June | 89° | 57° | 0.1" | 0.0" | 1 | 0 | 67° – 78° |
| July | 96° | 63° | 0.2" | 0.0" | 1 | 0 | 74° – 85° |
| August | 97° | 64° | 0.1" | 0.0" | 1 | 0 | 78° – 85° |
| September | 91° | 60° | 0.3" | 0.0" | 1 | 0 | 72° – 80° |
| October | 82° | 53° | 0.6" | 0.0" | 3 | 0 | 63° – 73° |
| November | 72° | 45° | 1.2" | 0.0" | 4 | 0 | 51° – 64° |
| December | 64° | 39° | 2.7" | 0.0" | 6 | 0 | 47° – 59° |
| Year | 79° | 51° | 16.9" | 0.0" | 43 | 0 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 46° to 62°. August is the most reliable, staying within 7°.
Where Calimesa’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 Calimesa’s center.
- Snow: Redlands, CA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Redlands, CA, 9 miles from the town’s center, 940 ft lower; no station nearby passes every check; this is the nearest one in the same valley, flagged above.
- 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 Calimesa’s climate
What is the weather like in Calimesa?
A typical July afternoon reaches 96°, a January night drops to 41°, and snow is almost unheard of. Milder January nights than 90% of U.S. towns; hotter July afternoons than 96% of U.S. towns.
How cold does it get in Calimesa in winter?
December nights average 39°. About 3 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 47°.
How much snow does Calimesa get?
About 0.0 inches in a normal winter at Redlands, CA, so most winters see none.
How hot does it get in Calimesa?
July, with a typical high of 96° and a low of 63°. About 104 days a year reach 90° and 26 reach 100° (Redlands, CA).
When is the first and last frost in Calimesa?
There is no reliable frost date: a 32° night comes in about 88% of winters at Redlands, CA, so most years bring a freeze but some pass without one.
What growing zone is Calimesa in?
Zone 9b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 28°.
What is the best time of year to visit Calimesa?
By one simple rule (highs of 62–84° and lows of 40° or more), January, February, March, April, May, October and November. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Calimesa getting warmer?
Yes: 1991–2020 averaged 2.0° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 88% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Calimesa.
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.