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Ben Lomond, California Weather

Summer solstice light stretched thin. Day 88 of spring. Read this microseason across nine climate regions →

Ben Lomond weather forecast — hour by hour, 7-day outlook, NOAA radar

Ben Lomond, CA
Monday, June 15 at 8:12 AM
57
°
Partly Cloudy
Feels like
57°
Humidity
91%
Wind
1 mph
Sunrise
10:47 PM
Sunset
1:29 PM
Ben Lomond, CA
Hour by hour · 24h
24-Hour ForecastBen Lomond, CA: 24-hour forecast. Temperatures range from 55 to 83 degrees Fahrenheit.
L 55°H 83°
Ben Lomond, CA
7-day forecast
  1. Today
    Jun 15
    Overcast
    —
    —
    83°50°—
  2. Tuesday
    Jun 16
    Foggy
    —
    —
    81°55°-2°
  3. Wednesday
    Jun 17
    Foggy
    —
    —
    81°53°0°
  4. Thursday
    Jun 18
    Overcast
    —
    —
    75°51°-6°
  5. Friday
    Jun 19
    Mostly Clear
    —
    —
    69°50°-6°
  6. Saturday
    Jun 20
    Clear
    —
    —
    74°47°+5°
  7. Sunday
    Jun 21
    Clear
    —
    —
    77°46°+3°
Ben Lomond, CA
Next 24 hours · Cool now
HOT 90°45°68°90°6a12p6p12anow 57°high 83°low 55°
Ben Lomond, CA
Anemometer · 24h winds · from true
NESW
From · True
NNE
018° · backing 94°
Direction
NNE
018°
Sustained
1
mph
Gust
1
mph
Peak 24h
10
avg 4
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 4 · pk 10 @ 4:00p
010MPHB1B2B3B4-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 100SUSTGUST
−24h−18h−12h−6hnow
A whisper of wind — leaves barely shift on the trees.
Ben Lomond, CA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
990.1
+1.5 mb in 3h · rising · 29.24 inHg
Now
990.1
mb
3h
+1.5
mb
12h
+1.1
mb
24h
+1.3
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 988–990
9809859909951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW990.1988.4990.1
−24h−18h−12h−6hnow
The low is filling — pressure climbing out of storm territory.
Ben Lomond, CA
Air quality
44
AQI
Good
→+3 in 6h

AQI 44 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 12.6 µg/m³ (AQI 58) with a 0.68 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.

PM 2.5DRIVERModerate
12.6μg/m³
PM 10Good
19μg/m³
NO₂Good
6μg/m³
OzoneModerate
61μg/m³
UV IndexLow
1.3

What's driving it

PM × Wind × Precip

PM2.5 at 12.6 µg/m³ (AQI 58) with a 0.68 fine-to-coarse ratio and 1 mph wind — combustion smoke trapped in calm air, not road dust.

PM2.5/PM10
0.68
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 TREND50100MONTUEWEDTHUFRISATSUNMON7-DAY PM2.5 TREND · μg/m³300
Ben Lomond, CA
Sky cover · visibility · 24h
Cloud cover
78%
MOSTLY CLOUDY
100%0%−24h−18h−12h−6hnow
Visibility
27.1mi
UNLIMITED
80 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
15:12 UTC · Ben Lomond, 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
15:12 UTC · Ben Lomond, CA · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Ben Lomond, CA
Satellite · infrared · animated
Ben Lomond, CA
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Ben Lomond, CA
Almanac · Monday, June 15
A summer fog for fair, a winter fog for rain.
Civil dawn
5:18 AM
Sunrise
10:47 PM
Daylight
14h 42m
Sunset
1:29 PM
Civil dusk
9:01 PM
Planting note
Stake and prune tomato suckers. Watch for squash vine borers.
Ben Lomond, CA
The moon
New Moon
1% illuminated
Moonrise
5:58 AM
Moonset
8:49 PM
In sign
♋︎ Cancer
Ben Lomond, CA
Microseason
Jun 11–15

Summer solstice light stretched thin

weather
Jan 145% of the yearDec 31

Read this microseason across nine climate regions →

Ben Lomond at a glance

  • Today vs. normal: 21°F below the seasonal normal for this latitude
  • Last frost: March 29 (climatological average for this latitude)
  • Microseason: Jun 11–15
  • Planting window: Stake and prune tomato suckers. Watch for squash vine borers.

16-Day Forecast — Ben Lomond

  1. Mon83°50°0%
  2. Tue81°55°0%
  3. Wed81°53°1%
  4. Thu75°51°2%
  5. Fri69°50°3%
  6. Sat74°47°4%
  7. Sun77°46°0%
  8. Mon81°46°0%
  9. Tue84°48°0%
  10. Wed83°49°0%
  11. Thu76°47°0%
  12. Fri70°49°0%
  13. Sat71°53°0%
  14. Sun82°52°0%
  15. Mon85°54°0%
  16. Tue97°55°3%

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.

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 · 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

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

Ben Lomond peaks at about 66°F in August and bottoms near 51°F in January; January brings the heaviest rain (5.5 inches) and July the least (0.1 inches).

MonthMean tempPrecipRainy days
January51°5.5″15
February52°5.0″13
March53°4.1″13
April56°1.9″9
May60°0.6″5
June62°0.1″3
July65°0.1″9
August66°0.1″10
September66°0.1″6
October63°0.8″7
November56°3.1″11
December51°4.5″14

Regional context

In Ben Lomond, NOAA NCEI 1991-2020 normals put January near 51°F and July near 65°F — a 14°F seasonal arc — with about 25.8 inches of precipitation over 112 rainy or snowy days.

Ben Lomond's moisture rides winter storm tracks: January brings 5.5 inches over 14.7 wet days, while July sees only 0.1 inches across 8.5 days in the dry warm season. That groups Ben Lomond with places like Brookdale, CA, Mount Hermon, CA and Zayante, CA on the same cool-season storm track.

With a coldest-month mean of 51°F, Ben Lomond stays mostly frost-free and grows year-round. The August peak near 66°F is Ben Lomond's real limit, pushing cool-season vegetables to spring and fall. Ben Lomond's coastal lots stay 4-7°F milder overnight than Ben Lomond's inland parcels.

Similar climates: Brookdale, CA, Mount Hermon, CA, Zayante, CA, Felton, CA, Lompico, CA.

Frequently asked

When does it freeze in Ben Lomond?
Ben Lomond's last spring frost lands near mid-April, and in Ben Lomond the first fall frost follows around mid-November.
What is the rainy season in Ben Lomond?
January is the wettest month in Ben Lomond, about 5.5 inches on average; the year totals roughly 26 inches.
What is the warmest month in Ben Lomond?
August is Ben Lomond's warmest month, averaging about 66°F.
What is the coldest month in Ben Lomond?
Ben Lomond bottoms out in January, with a mean near 51°F.
When can I start a vegetable garden in Ben Lomond?
Frost-hardy sowings begin at mid-April in Ben Lomond; warm-season starts follow two weeks on.
How many rainy days does Ben Lomond get?
Ben Lomond records around 112 days of measurable precipitation annually.
What hardiness zone is Ben Lomond?
Ben Lomond sits in the USDA zone set by January lows near 51°F; the USDA ZIP tool gives the band.
What is the 10-day forecast for Ben Lomond?
Ben Lomond'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 Ben Lomond?
See this week's day-by-day rain chances for Ben Lomond in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Ben Lomond?
Current conditions for Ben Lomond and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Ben Lomond forecast updated?
The Ben Lomond forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Ben Lomond?
Day length in Ben Lomond peaks around the June solstice — earliest sunrise and latest sunset — and is shortest near the December solstice.
How accurate is the weather forecast for Ben Lomond?
The next few days in Ben Lomond's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

Ben Lomond, California has a hot-summer Mediterranean climate: January averages roughly 51°F, July about 65°F, 14°F between them.

Ben Lomond sees close to 26 inches of precipitation annually, falling across some 112 wet days.

Latitude 37.1°N gives Ben Lomond its 14°F swing, and with it the rhythm of Ben Lomond's growing season.

All cities in California →

Santa Cruz, CA weather →

ZIP codes in Ben Lomond

  • 95005
  • 95018

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.