Calimesa, California Weather
Summer solstice light stretched thin. Day 88 of spring. Read this microseason across nine climate regions →
Calimesa weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Clear——93°64°—
- TuesdayJun 16Clear——93°62°0°
- WednesdayJun 17Clear——90°61°-3°
- ThursdayJun 18Clear——88°58°-2°
- FridayJun 19Clear——84°57°-4°
- SaturdayJun 20Clear——81°52°-3°
- SundayJun 21Clear——84°50°+3°
AQI 59 (Moderate), driven by PM2.5. AQI down 39 over the last 6 hours — air quality is improving sharply. PM2.5 at 18.3 µg/m³ (AQI 68) with a 0.79 fine-to-coarse ratio and 1 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 18.3 µg/m³ (AQI 68) with a 0.79 fine-to-coarse ratio and 1 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.79
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).








































A summer fog for fair, a winter fog for rain.
- Moonrise
- 5:50 AM
- Moonset
- 8:16 PM
- In sign
- ♊︎ Gemini
Summer solstice light stretched thin
Calimesa at a glance
- Today vs. normal: 14°F below the seasonal normal for this latitude
- Last frost: March 11 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
15-Day Forecast — Calimesa
- Mon93°64°1%
- Tue93°62°1%
- Wed90°61°0%
- Thu88°58°0%
- Fri84°57°0%
- Sat81°52°0%
- Sun84°50°0%
- Mon89°53°0%
- Tue91°58°0%
- Wed91°60°0%
- Thu88°57°0%
- Fri87°53°0%
- Sat85°52°0%
- Sun86°52°0%
- Mon89°53°0%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 15, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
Microseason · June 11–15
Summer solstice light stretched thin
The sun's arc peaks; evening light lingers until past 8:30pm across the coast and Bay Area.
Day 166 of 365 · Wedge 33 of 72
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | lettuce, peas, spinach, radishes | — |
| April | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | — |
| May | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | — | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | — | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | fall brassicas, garlic (overwinter), carrots | — |
| December | — | — |
A year in weather
Calimesa peaks at about 80°F in August and bottoms near 53°F in December; February brings the heaviest rain (3.0 inches) and August the least (0.1 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 54° | 2.8″ | 5 |
| February | 55° | 3.0″ | 5 |
| March | 58° | 2.0″ | 4 |
| April | 62° | 0.9″ | 2 |
| May | 66° | 0.3″ | 1 |
| June | 72° | 0.1″ | 0 |
| July | 79° | 0.1″ | 1 |
| August | 80° | 0.1″ | 0 |
| September | 76° | 0.1″ | 0 |
| October | 68° | 0.5″ | 1 |
| November | 60° | 0.9″ | 2 |
| December | 53° | 2.0″ | 4 |
Regional context
Drawing on NOAA NCEI 1991-2020 normals, Calimesa's January averages 54°F and July 79°F — 25°F apart — while precipitation totals roughly 12.9 inches over some 24 days.
Precipitation in Calimesa peaks in the cool season: February averages 3.0 inches across 4.7 storm-fed days, while August bottoms out at 0.1 inches over just 0.2 rainy days. It is a winter-storm rhythm Calimesa shares with places like Yucaipa, CA, Cherry Valley, CA and Mentone, CA.
Freezes are uncommon in Calimesa, where the coldest month averages 53°F; cool-season crops grow fall through spring. Summer heat in August (about 80°F) is the binding constraint, not cold. Calimesa's coastal lots stay 4-7°F milder overnight than Calimesa's inland parcels.
Similar climates: Yucaipa, CA, Cherry Valley, CA, Mentone, CA, Beaumont, CA, Oak Glen, CA.
Frequently asked
- When does it freeze in Calimesa?
- In Calimesa, expect the last spring frost near mid-March; Calimesa's first autumn frost comes around mid-December.
- What is the rainy season in Calimesa?
- Rainfall in Calimesa peaks in February near 3.0 inches, out of about 13 inches annually.
- What is the warmest month in Calimesa?
- On average August tops the year in Calimesa at about 80°F.
- What is the coldest month in Calimesa?
- The coldest stretch in Calimesa falls in December, around 53°F on average.
- When can I start a vegetable garden in Calimesa?
- Around mid-March, start frost-hardy crops in Calimesa; tomatoes and basil belong a fortnight later.
- How many rainy days does Calimesa get?
- Expect roughly 24 wet days a year in Calimesa.
- What hardiness zone is Calimesa?
- Because Calimesa bottoms near 53°F in December, that winter low sets Calimesa's USDA zone — verify by ZIP.
- What is the 10-day forecast for Calimesa?
- Calimesa's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Calimesa?
- See this week's day-by-day rain chances for Calimesa in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Calimesa?
- Current conditions for Calimesa and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Calimesa forecast updated?
- The Calimesa forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Calimesa?
- Day length in Calimesa peaks around the June solstice — earliest sunrise and latest sunset — and is shortest near the December solstice.
- How accurate is the weather forecast for Calimesa?
- The next few days in Calimesa's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
The hot-summer Mediterranean climate of Calimesa, California carries typical Januarys near 54°F and Julys around 79°F — 25°F of seasonal travel.
In a typical year Calimesa records about 13 inches of precipitation on around 24 days.
From 34.0°N, Calimesa sees a 25°F seasonal swing that governs Calimesa's planting and frost windows.
ZIP codes in Calimesa
- 92320