Spring Valley Lake, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
Spring Valley Lake weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Partly Cloudy——91°66°—
- MondayJul 6Clear——95°64°+4°
- TuesdayJul 7Clear——99°66°+4°
- WednesdayJul 8Clear——103°66°+4°
- ThursdayJul 9Clear——103°66°0°
- FridayJul 10Overcast——101°69°-2°
- SaturdayJul 11Overcast——100°71°-1°
AQI 29 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 5.6 µg/m³ (AQI 31) with a 0.78 fine-to-coarse ratio and 5 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
Ozone × UV × Sky
Ozone at AQI 31 now. With UV 11 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 44 around 1 PM.
- Present
- AQI 31
- UV peak
- 10.6 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 44
PM × Wind × Precip
PM2.5 at 5.6 µg/m³ (AQI 31) with a 0.78 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.78
- Wind
- light
- 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).








































If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:05 PM
- Moonset
- 11:08 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
Spring Valley Lake at a glance
- Today vs. normal: 10°F above the seasonal normal for this latitude
- Last frost: March 14 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Spring Valley Lake
- Sun91°66°1%
- Mon95°64°1%
- Tue99°66°0%
- Wed103°66°0%
- Thu103°66°0%
- Fri101°69°1%
- Sat100°71°2%
- Sun94°68°4%
- Mon102°66°10%
- Tue96°74°20%
- Wed95°74°7%
- Thu104°76°13%
- Fri103°77°19%
- Sat96°78°10%
- Sun104°76°19%
- Mon104°77°18%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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 · July 1–5
Summer heat deepens across the valleys
Inland temperatures exceed 95°F regularly; fire danger reaches moderate to high across most of the region.
Day 186 of 365 · Wedge 37 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
Spring Valley Lake's warmest month is July (~81°F mean) and its coldest is December (~45°F). Rainfall peaks in February (1.3 inches) and bottoms out in June (0.0 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 46° | 1.0″ | 2 |
| February | 48° | 1.3″ | 3 |
| March | 53° | 0.8″ | 2 |
| April | 59° | 0.3″ | 1 |
| May | 66° | 0.1″ | 0 |
| June | 75° | 0.0″ | 0 |
| July | 81° | 0.2″ | 1 |
| August | 80° | 0.1″ | 0 |
| September | 74° | 0.2″ | 0 |
| October | 63° | 0.3″ | 1 |
| November | 52° | 0.3″ | 1 |
| December | 45° | 0.9″ | 2 |
Regional context
By the nearest station's NOAA NCEI 1991-2020 normals, Spring Valley Lake sees 46°F Januarys and 81°F Julys, a 35°F range, plus around 5.6 inches of precipitation across 13 days.
Spring Valley Lake's moisture rides winter storm tracks: February brings 1.3 inches over 2.8 wet days, while June sees only 0.0 inches across 0.1 days in the dry warm season. That cool-season-wet pattern aligns Spring Valley Lake with places like Apple Valley, CA, Mountain View Acres, CA and Victorville, CA.
Spring Valley Lake's growing window opens around mid-March, once Spring Valley Lake's overnight lows stop freezing — sow lettuce, chard, arugula, and mustard greens. Warm-soil crops in Spring Valley Lake wait about two weeks past Spring Valley Lake's last frost, once the soil warms. It shuts near mid-December, when freezes return to Spring Valley Lake and tender plants need cover. In Spring Valley Lake, low spots run 4-7°F colder than nearby slopes, nudging Spring Valley Lake's frost dates a week.
Similar climates: Apple Valley, CA, Mountain View Acres, CA, Victorville, CA, Hesperia, CA, Oak Hills, CA.
Frequently asked
- When does it freeze in Spring Valley Lake?
- In Spring Valley Lake, expect the last spring frost near mid-March; Spring Valley Lake's first autumn frost comes around mid-December.
- What is the rainy season in Spring Valley Lake?
- Rainfall in Spring Valley Lake peaks in February near 1.3 inches, out of about 6 inches annually.
- What is the warmest month in Spring Valley Lake?
- Spring Valley Lake peaks in July, when the mean runs near 81°F.
- What is the coldest month in Spring Valley Lake?
- December is Spring Valley Lake's coldest month, averaging about 45°F.
- When can I start a vegetable garden in Spring Valley Lake?
- Around mid-March, start frost-hardy crops in Spring Valley Lake; tomatoes and basil belong a fortnight later.
- How many rainy days does Spring Valley Lake get?
- Spring Valley Lake averages about 13 days with measurable rain or snow each year.
- What hardiness zone is Spring Valley Lake?
- Since December in Spring Valley Lake averages 45°F, Spring Valley Lake's USDA zone follows that floor — confirm it by ZIP.
- What is the 10-day forecast for Spring Valley Lake?
- Spring Valley Lake'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 Spring Valley Lake?
- See this week's day-by-day rain chances for Spring Valley Lake in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Spring Valley Lake?
- Current conditions for Spring Valley Lake and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Spring Valley Lake forecast updated?
- The Spring Valley Lake forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Spring Valley Lake?
- Today's sunrise and sunset times for Spring Valley Lake are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Spring Valley Lake?
- The next few days in Spring Valley Lake's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
The hot-summer Mediterranean climate of Spring Valley Lake, California carries typical Januarys near 46°F and Julys around 81°F — 35°F of seasonal travel.
Spring Valley Lake sees close to 6 inches of precipitation annually, falling across some 13 wet days.
Spring Valley Lake sits at 34.5°N; that 35°F seasonal swing frames planting windows and frost dates across Spring Valley Lake.
ZIP codes in Spring Valley Lake
- 92395