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Spring Valley, California Weather

Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →

Spring Valley weather forecast — hour by hour, 7-day outlook, NOAA radar

Spring Valley, CA
Sunday, July 5 at 9:56 AM
72
°
Mostly Clear
Feels like
77°
Humidity
76%
Wind
3 mph
Sunrise
10:45 PM
Sunset
12:59 PM
Spring Valley, CA
Hour by hour · 24h
24-Hour ForecastSpring Valley, CA: 24-hour forecast. Temperatures range from 61 to 83 degrees Fahrenheit.
L 61°H 83°
Spring Valley, CA
7-day forecast
  1. Today
    Jul 5
    Foggy
    —
    —
    83°63°—
  2. Monday
    Jul 6
    Partly Cloudy
    —
    —
    84°61°+1°
  3. Tuesday
    Jul 7
    Foggy
    —
    —
    84°60°0°
  4. Wednesday
    Jul 8
    Clear
    —
    —
    85°69°+1°
  5. Thursday
    Jul 9
    Clear
    —
    —
    89°71°+4°
  6. Friday
    Jul 10
    Overcast
    —
    —
    88°71°-1°
  7. Saturday
    Jul 11
    Overcast
    —
    —
    85°71°-3°
Spring Valley, CA
Next 24 hours · Mild now
HOT 90°55°73°90°6a12p6p12anow 69°high 83°low 61°
Spring Valley, CA
Anemometer · 24h winds · from true
NESW
From · True
WNW
282° · veering 46°
Direction
WNW
282°
Sustained
3
mph
Gust
3
mph
Peak 24h
11
avg 5
Beaufort · 1 · LIGHT AIR
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 5 · pk 11 @ 3:00p
010MPHB1B2B3B4-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 113SUSTGUST
−24h−18h−12h−6hnow
A whisper of wind — leaves barely shift on the trees.
Spring Valley, CA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
996.2
+1.2 mb in 3h · rising · 29.42 inHg
Now
996.2
mb
3h
+1.2
mb
12h
+0.7
mb
24h
-0.7
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 995–998
9909951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW997.7995.0996.6
−24h−18h−12h−6hnow
The low is filling — pressure climbing out of storm territory.
Spring Valley, CA
Air quality
45
AQI
Good
→+2 in 6h

AQI 45 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 11.2 µg/m³ (AQI 55) with a 0.70 fine-to-coarse ratio and 3 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.

PM 2.5DRIVERGood
11.2μg/m³
PM 10Good
16μg/m³
NO₂Good
3μg/m³
OzoneModerate
76μg/m³
UV IndexModerate
4.1

What's driving it

Ozone × UV × Sky

Ozone at AQI 36 now. With UV 8.2 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 39 around 1 PM.

Present
AQI 36
UV peak
8.2 at 1 PM
Sky at peak
clear
Projected peak
AQI 39

PM × Wind × Precip

PM2.5 at 11.2 µg/m³ (AQI 55) with a 0.70 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.

PM2.5/PM10
0.70
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).

7-DAY AQI TREND50100SUNMONTUEWEDTHUFRISATSUN7-DAY PM2.5 TREND · μg/m³300
Spring Valley, CA
Sky cover · visibility · 24h
Cloud cover
23%
CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
37.5mi
UNLIMITED
87 mi0 mi−24h−18h−12h−6hnow
Earth · GOES-19 ABI
Full Disk · Visible · GeoColor
GOES-19 full disk Visible · GeoColor
True-color daytime, blue/IR sandwich at night
16:56 UTC · Spring Valley, CA · NOAA NESDIS / STAR · up to 10848 px
Continental US · GOES-19 ABI
CONUS Sector · Visible · GeoColor
GOES-19 CONUS Visible · GeoColor
Daytime true-color, blue-light/IR sandwich at night
16:56 UTC · Spring Valley, CA · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Spring Valley, CA
Satellite · infrared · animated
Spring Valley, CA
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Spring Valley, CA
Almanac · Sunday, July 5
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
5:18 AM
Sunrise
10:45 PM
Daylight
14h 14m
Sunset
12:59 PM
Civil dusk
8:29 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Spring Valley, CA
The moon
Waning Gibbous
71% illuminated
Moonrise
11:03 PM
Moonset
11:07 AM
In sign
♓︎ Pisces
Spring Valley, CA
Microseason
Jul 1–5

Summer heat deepens across the valleys

weather
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Spring Valley at a glance

  • Today vs. normal: 7°F below the seasonal normal for this latitude
  • Last frost: March 3 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

ZIP codes: 91977, 91978

16-Day Forecast — Spring Valley

  1. Sun83°63°0%
  2. Mon84°61°1%
  3. Tue84°60°0%
  4. Wed85°69°0%
  5. Thu89°71°0%
  6. Fri88°71°0%
  7. Sat85°71°1%
  8. Sun84°73°4%
  9. Mon84°74°13%
  10. Tue84°73°13%
  11. Wed91°76°5%
  12. Thu95°79°20%
  13. Fri102°84°14%
  14. Sat101°86°12%
  15. Sun95°81°13%
  16. Mon92°78°9%

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.

January 1–5: New year in coastal mist.January 6–10: Hills hold the winter cold.January 11–15: Light lengthens over wet earth.January 16–20: The green pulse quickens.January 21–25: Spring green spreads inland.January 26–31: Winter's grip releases.February 1–5: Fog lifts, flowers open.February 6–10: Blooms erupt across chaparral.February 11–15: Winter blooms at their peak.February 16–20: Rivers recede, flowers spread.February 21–25: Earth warms, flowers rush upslope.February 26–28: Spring advances on cool winds.March 1–5: Grass and trees bud and break.March 6–10: Insects wake and feed.March 11–15: Blossoms crown the hillsides.March 16–20: Monarch chrysalis emergence.March 21–25: Light overtakes dark at equinox.March 26–31: California poppy ablaze.April 1–5: Spring rain feeds the seedlings.April 6–10: Warblers flood the understory.April 11–15: Allen's hummingbirds in courtship dives.April 16–20: Coastal fog settles; sun breaks midday.April 21–25: Oak canopies full and green.April 26–30: Chaparral awakens after spring rains.May 1–5: Coastal wildflowers at their peak.May 6–10: Gray whales complete their migration north.May 11–15: Redwood coast in cool shade.May 16–20: Fog and sun in daily rhythm.May 21–25: Summer approaches; hills turn gold.May 26–31: Dry season begins; tule fog in valleys.June 1–5: Coastal fog thickens at dawn.June 6–10: California poppies fade as heat rises.June 11–15: Summer solstice light stretched thin.June 16–20: Bay laurel fragrance sweetens shade.June 21–25: Longest daylight, driest air.June 26–30: Fog banks mask the turning tide.July 1–5: Summer heat deepens across the valleys.July 6–10: Warm winds drive dryness inland.July 11–15: Pacific high settles in firmly.July 16–20: Young hawks take to the thermals.July 21–25: Peak fire season, peak heat.July 26–31: Chaparral poised for ignition.August 1–5: August begins in scorching stillness.August 6–10: Autumn's first cool breath arrives.August 11–15: Cool winds signal the turning year.August 16–20: Evening cicada chorus.August 21–25: Marine layer descent.August 26–31: Monarch staging begins.September 1–5: Fire season intensity.September 6–10: Dew on drying grasses.September 11–15: Raptor passage begins.September 16–20: Equinox descent.September 21–25: Ceanothus blooms again.September 26–30: Insects retreat below.October 1–5: Creeks begin to whisper.October 6–10: Santa Ana wind season.October 11–15: Wildflower anticipation.October 16–20: Chaparral embers glow.October 21–25: First atmospheric river looms.October 26–31: Rains return at last.November 1–5: Coast live oak leaves turn amber.November 6–10: California lilac blooms in winter light.November 11–15: First rain greens the chaparral.November 16–20: Coastal fog thickens as storms approach.November 21–25: Thanksgiving rains swell the valleys.November 26–30: Autumn's last breath yields to winter.December 1–5: December arrives, storms accelerate.December 6–10: Winter solstice season intensifies.December 11–15: Deep winter: rivers at flood stage.December 16–20: Winter salmon runs peak in northern rivers.December 21–25: Winter solstice: the sun turns.December 26–31: Year's end in wind and rain.🌱February 14 — First skunk-cabbage spathes thaw their way up☀️March 20 — Spring equinox — day and night balance🌸April 5 — Cherry blossoms peak in the parks🐦May 10 — Warbler migration peaks along the coast✨May 25 — First fireflies scout the meadows at dusk🌞June 21 — Summer solstice — longest day🦗July 25 — Peak cicada chorus in the afternoons🌊August 18 — Warmest sea-surface temperatures of the year🍂September 22 — Autumn equinox — the slow turn❄️October 25 — First widespread frost in the suburbs🍁November 10 — Peak leaf color across the Hudson Valley🌙December 21 — Winter solstice — longest night

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

The solar year drawn as a wheel of 72 five-day windows. Each wedge is one microseason; the four colored arcs mark winter, spring, summer, and autumn; the small icons sit at notable phenological events. The crimson pointer creeps clockwise as the year turns.

Planting calendar

MonthPlantHarvest
January——
February——
Marchlettuce, peas, spinach, radishes—
Aprillettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash—
Maytomatoes, peppers, beans, squashlettuce, peas, radishes
Junetomatoes, peppers, beans, squashlettuce, peas, radishes
July—tomatoes, beans, summer squash
August—tomatoes, beans, summer squash
September—tomatoes, beans, summer squash
Octoberfall brassicas, garlic (overwinter), carrotswinter squash, tomatoes (last)
Novemberfall brassicas, garlic (overwinter), carrots—
December——

A year in weather

The year in Spring Valley tops out in August (~74°F) and dips lowest in January (~55°F), with February wettest at 2.1 inches and July driest at 0.1 inches.

MonthMean tempPrecipRainy days
January55°2.0″10
February56°2.1″10
March58°1.9″12
April61°1.0″10
May64°0.3″10
June68°0.1″8
July73°0.1″3
August74°0.1″4
September73°0.1″5
October68°0.3″6
November61°1.0″7
December55°2.0″9

Regional context

Spring Valley swings from 55°F in January to 73°F in July (18°F) per NOAA NCEI 1991-2020 normals; precipitation in Spring Valley runs about 11 inches on roughly 94 measurable days.

Spring Valley's moisture rides winter storm tracks: February brings 2.1 inches over 9.6 wet days, while July sees only 0.1 inches across 3.0 days in the dry warm season. That cool-season-wet pattern aligns Spring Valley with places like La Presa, CA, Casa de Oro-Mount Helix, CA and Lemon Grove, CA.

Hard freezes are rare in Spring Valley: the coldest month averages 55°F, so Spring Valley's growing window runs most of the year. August is the hottest stretch near 74°F, pushing cool-season crops to the milder shoulder months. Within Spring Valley, low or inland lots lose 3-5°F overnight versus Spring Valley's coastal ground.

Similar climates: La Presa, CA, Casa de Oro-Mount Helix, CA, Lemon Grove, CA, La Mesa, CA, Rancho San Diego, CA.

Frequently asked

When does it freeze in Spring Valley?
In Spring Valley, expect the last spring frost near mid-March; Spring Valley's first autumn frost comes around mid-December.
What is the rainy season in Spring Valley?
Rainfall in Spring Valley peaks in February near 2.1 inches, out of about 11 inches annually.
What is the warmest month in Spring Valley?
August is Spring Valley's warmest month, averaging about 74°F.
What is the coldest month in Spring Valley?
Spring Valley bottoms out in January, with a mean near 55°F.
When can I start a vegetable garden in Spring Valley?
Frost-hardy sowings begin at mid-March in Spring Valley; warm-season starts follow two weeks on.
How many rainy days does Spring Valley get?
Spring Valley averages about 94 days with measurable rain or snow each year.
What hardiness zone is Spring Valley?
Spring Valley's USDA zone comes from its January mean (55°F); enter the ZIP on the USDA lookup for the number.
What is the 10-day forecast for Spring Valley?
Spring Valley'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?
See this week's day-by-day rain chances for Spring Valley in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Spring Valley?
Current conditions for Spring Valley 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 forecast updated?
The Spring Valley 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?
Today's sunrise and sunset times for Spring Valley 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?
The next few days in Spring Valley's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

Spring Valley's hot-summer Mediterranean climate in California pairs 55°F Januarys with 73°F Julys, 18°F apart across the seasons.

Rain and snow bring Spring Valley roughly 11 inches a year across approximately 94 measurable-precipitation days.

At 32.7°N, Spring Valley's 18°F summer-to-winter swing sets when Spring Valley's gardens wake and when frost returns.

All cities in California →

Chula Vista, CA weather →

ZIP codes in Spring Valley

  • 91977
  • 91978
  • 91979

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.