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Reliez Valley, California Weather

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

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

Reliez Valley, CA
Sunday, July 5 at 11:05 AM
71
°
Clear
Feels like
73°
Humidity
58%
Wind
7 mph
Sunrise
10:51 PM
Sunset
1:34 PM
Reliez Valley, CA
Hour by hour · 24h
24-Hour ForecastReliez Valley, CA: 24-hour forecast. Temperatures range from 53 to 75 degrees Fahrenheit.
L 53°H 75°
Reliez Valley, CA
7-day forecast
  1. Today
    Jul 5
    Mostly Clear
    —
    —
    75°56°—
  2. Monday
    Jul 6
    Overcast
    —
    —
    73°53°-2°
  3. Tuesday
    Jul 7
    Overcast
    —
    —
    76°52°+3°
  4. Wednesday
    Jul 8
    Overcast
    —
    —
    83°51°+7°
  5. Thursday
    Jul 9
    Mostly Clear
    —
    —
    86°52°+3°
  6. Friday
    Jul 10
    Overcast
    —
    —
    87°52°+1°
  7. Saturday
    Jul 11
    Overcast
    —
    —
    92°55°+5°
Reliez Valley, CA
Next 24 hours · Mild now
45°63°80°6a12p6p12anow 71°high 75°low 53°
Reliez Valley, CA
Anemometer · 24h winds · from true
NESW
From · True
SW
224° · backing 73°
Direction
SW
224°
Sustained
7
mph
Gust
9
mph
Peak 24h
22
avg 7
Beaufort · 2 · LIGHT BRZ
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 7 · pk 22 @ 2:00a
01020MPHB1B2B3B4B5-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 2011SUSTGUST
−24h−18h−12h−6hnow
A whisper of wind — leaves barely shift on the trees.
Reliez Valley, CA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1002.9
+0.7 mb in 3h · rising · 29.62 inHg
Now
1002.9
mb
3h
+0.7
mb
12h
+0.7
mb
24h
-0.3
mb
Regime · RAIN
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 1001–1003
9951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW1003.21000.91002.9
−24h−18h−12h−6hnow
Damp, unsettled regime — wet weather lingers nearby.
Reliez Valley, CA
Air quality
30
AQI
Good
→-3 in 6h

AQI 30 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 5.5 µg/m³, PM10 at 7.3 µg/m³ — typical background levels with no transport signature.

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.

PM 2.5DRIVERGood
5.5μg/m³
PM 10Good
7μg/m³
NO₂Good
4μg/m³
OzoneGood
53μg/m³
UV IndexHigh
5.8

What's driving it

PM × Wind × Precip

PM2.5 at 5.5 µg/m³, PM10 at 7.3 µg/m³ — typical background levels with no transport signature.

PM2.5/PM10
0.75
Wind
light
Recent rain
0h in last 6h
Pattern
background

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
Reliez Valley, CA
Sky cover · visibility · 24h
Cloud cover
3%
CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
61.8mi
UNLIMITED
151 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
18:05 UTC · Reliez 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
18:05 UTC · Reliez Valley, CA · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Reliez Valley, CA
Satellite · infrared · animated
Reliez Valley, CA
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Reliez 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
5:21 AM
Sunrise
10:51 PM
Daylight
14h 43m
Sunset
1:34 PM
Civil dusk
9:06 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Reliez Valley, CA
The moon
Waning Gibbous
70% illuminated
Moonrise
11:27 PM
Moonset
11:27 AM
In sign
♓︎ Pisces
Reliez 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 →

Reliez Valley at a glance

  • Today vs. normal: 3°F below the seasonal normal for this latitude
  • Last frost: April 4 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

16-Day Forecast — Reliez Valley

  1. Sun75°56°1%
  2. Mon73°53°0%
  3. Tue76°52°2%
  4. Wed83°51°0%
  5. Thu86°52°0%
  6. Fri87°52°0%
  7. Sat92°55°0%
  8. Sun81°59°1%
  9. Mon94°63°3%
  10. Tue95°57°5%
  11. Wed93°56°0%
  12. Thu93°54°3%
  13. Fri97°59°0%
  14. Sat89°55°3%
  15. Sun85°52°0%
  16. Mon85°51°3%

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——
March——
Aprillettuce, peas, spinach, radishes—
Maylettuce, peas, spinach, radishes, tomatoes, peppers, beans, squashlettuce, peas, radishes
Junetomatoes, peppers, beans, squashlettuce, peas, radishes
Julytomatoes, peppers, beans, squashtomatoes, beans, summer squash
August—tomatoes, beans, summer squash
Septemberfall brassicas, garlic (overwinter), carrotstomatoes, beans, summer squash
Octoberfall brassicas, garlic (overwinter), carrotswinter squash, tomatoes (last)
November——
December——

A year in weather

July is Reliez Valley's warmest stretch (~70°F) and January its coldest (~49°F); precipitation crests in January at 3.5 inches and ebbs in July to 0.0 inches.

MonthMean tempPrecipRainy days
January49°3.5″13
February51°3.3″12
March53°2.7″13
April58°1.4″9
May64°0.5″4
June68°0.0″1
July70°0.0″1
August70°0.0″1
September69°0.1″1
October64°0.6″4
November55°2.2″8
December49°3.2″12

Regional context

Reliez Valley swings from 49°F in January to 70°F in July (22°F) per NOAA NCEI 1991-2020 normals; precipitation in Reliez Valley runs about 17.5 inches on roughly 79 measurable days.

Precipitation in Reliez Valley peaks in the cool season: January averages 3.5 inches across 13.3 storm-fed days, while July bottoms out at 0.0 inches over just 0.9 rainy days. That groups Reliez Valley with places like Pleasant Hill, CA, Alhambra Valley, CA and Acalanes Ridge, CA on the same cool-season storm track.

Hard freezes are rare in Reliez Valley: the coldest month averages 49°F, so Reliez Valley's growing window runs most of the year. July is the hottest stretch near 70°F, pushing cool-season crops to the milder shoulder months. Within Reliez Valley, low or inland lots lose 3-5°F overnight versus Reliez Valley's coastal ground.

Similar climates: Pleasant Hill, CA, Alhambra Valley, CA, Acalanes Ridge, CA, Contra Costa Centre, CA, Lafayette, CA.

Frequently asked

When does it freeze in Reliez Valley?
Frost typically leaves Reliez Valley by mid-April and returns to Reliez Valley near mid-November.
What is the rainy season in Reliez Valley?
Reliez Valley sees its heaviest rain in January (around 3.5 inches), part of roughly 18 inches a year.
What is the warmest month in Reliez Valley?
July is Reliez Valley's warmest month, averaging about 70°F.
What is the coldest month in Reliez Valley?
Reliez Valley bottoms out in January, with a mean near 49°F.
When can I start a vegetable garden in Reliez Valley?
Reliez Valley's last frost (mid-April) cues hardy greens; in Reliez Valley, hold heat-lovers two weeks past.
How many rainy days does Reliez Valley get?
Reliez Valley averages about 79 days with measurable rain or snow each year.
What hardiness zone is Reliez Valley?
Reliez Valley sits in the USDA zone set by January lows near 49°F; the USDA ZIP tool gives the band.
What is the 10-day forecast for Reliez Valley?
Reliez 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 Reliez Valley?
See this week's day-by-day rain chances for Reliez Valley in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Reliez Valley?
Current conditions for Reliez 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 Reliez Valley forecast updated?
The Reliez 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 Reliez Valley?
Today's sunrise and sunset times for Reliez 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 Reliez Valley?
The next few days in Reliez Valley's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

Reliez Valley's hot-summer Mediterranean climate in California pairs 49°F Januarys with 70°F Julys, 21°F apart across the seasons.

Reliez Valley sees close to 18 inches of precipitation annually, falling across some 79 wet days.

At 37.9°N, Reliez Valley's 21°F summer-to-winter swing sets when Reliez Valley's gardens wake and when frost returns.

All cities in California →

Walnut Creek, CA weather →

ZIP codes in Reliez Valley

  • 94549

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.