Hillsborough, California 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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NWS Forecast for Hillsborough CA
National Weather Service Forecast for:
Hillsborough CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA |
Updated: 5:55 am PDT Jun 21, 2025 |
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Today
 Sunny then Sunny and Breezy
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Tonight
 Clear
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Sunday
 Sunny
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Sunday Night
 Mostly Clear
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Monday
 Mostly Sunny
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Monday Night
 Partly Cloudy
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Tuesday
 Mostly Sunny
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Tuesday Night
 Partly Cloudy
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Wednesday
 Mostly Sunny
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Hi 69 °F |
Lo 51 °F |
Hi 70 °F |
Lo 51 °F |
Hi 73 °F |
Lo 52 °F |
Hi 70 °F |
Lo 52 °F |
Hi 71 °F |
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Today
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Sunny, with a high near 69. Breezy, with a west northwest wind 13 to 22 mph, with gusts as high as 33 mph. |
Tonight
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Clear, with a low around 51. West northwest wind 10 to 20 mph, with gusts as high as 32 mph. |
Sunday
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Sunny, with a high near 70. West wind 9 to 16 mph, with gusts as high as 20 mph. |
Sunday Night
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Mostly clear, with a low around 51. West wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 24 mph. |
Monday
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Mostly sunny, with a high near 73. Light west southwest wind becoming west 5 to 10 mph in the afternoon. |
Monday Night
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Partly cloudy, with a low around 52. |
Tuesday
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Mostly sunny, with a high near 70. |
Tuesday Night
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Partly cloudy, with a low around 52. |
Wednesday
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Mostly sunny, with a high near 71. |
Wednesday Night
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Mostly clear, with a low around 52. |
Thursday
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Mostly sunny, with a high near 72. |
Thursday Night
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Mostly clear, with a low around 53. |
Friday
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Sunny, with a high near 73. |
Forecast from NOAA-NWS
for Hillsborough CA.
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Weather Forecast Discussion
243
FXUS66 KMTR 211302
AFDMTR
Area Forecast Discussion
National Weather Service San Francisco CA
602 AM PDT Sat Jun 21 2025
...New FIRE WEATHER...
.SYNOPSIS...
Issued at 400 AM PDT Sat Jun 21 2025
Elevated fire weather concerns continue through Sunday morning.
Otherwise quiet weather on tap after that with near normal
temperatures.
&&
.SHORT TERM...
(Today and tonight)
Issued at 400 AM PDT Sat Jun 21 2025
The forecast remains on track with an upper level low tracking into
the Great Basin, deepening the larger upper level trough. Flow
will remain onshore with gusty winds picking back up by mid to
late morning. The pressure gradient looks to support another gusty
day with gusts peaking 25-35 mph, with gusts up to 40 mph, or
locally higher. for areas along the coast or at wind prone gaps
and passes. The forecast looks to remain dry, especially for areas
above the marine layer where recovery is expected to be poor. The
marine layer should be around 1500-2000ft. Given these conditions
and cured grasses and dried shrubbery, elevated fire weather
countdowns will continue.
&&
.LONG TERM...
(Sunday through Friday)
Issued at 400 AM PDT Sat Jun 21 2025
Saturday evening into Sunday morning, winds look to remain breezy
before beginning to ease. Upper level troughing looks hold, though a
perturbation forms causing the through to deepen a bit more over
Central CA. This then looks to essentially park itself over CA and
NV through midweek with more zonal flow returning mid to late week.
Weather should generally be more typical for this time of year,
seasonable temperatures, nighttime and morning stratus, and
generally quiet weather.
&&
.AVIATION...
(12Z TAFS)
Issued at 503 AM PDT Sat Jun 21 2025
Currently VFR at the terminals with very patchy stratus. High
confidence in VFR through the TAF period. Strong and gusty onshore
winds are expected through the TAF period with the help of the
passage of an upper-level shortwave trough.
Vicinity of SFO...Currently VFR with westerly flow. High confidence
in VFR through the TAF period. Westerly/westnorthwesterly winds will
strengthen through the morning with gusts up to 35 knots to be
expected in the afternoon and evening.
SFO Bridge Approach...Similar to SFO.
Monterey Bay Terminals...Currently VFR with southwesterly flow at
MRY and VFR with westerly flow at SNS. High confidence in VFR
through the TAF period, although there is some IFR stratus within
the vicinity of the terminals. Gusty onshore winds will prevail
through the TAF period.
&&
.MARINE...
(Today through Thursday)
Issued at 503 AM PDT Sat Jun 21 2025
Widespread hazardous marine conditions are expected over the
waters through the weekend in the form of near-gale northerly
breezes, severe gale force gusts, and rough to very rough seas.
The bays will be more sheltered, but will still experience fresh
to strong northwesterly breezes.
&&
.FIRE WEATHER...
Issued at 557 AM PDT Sat Jun 21 2025
Elevated to near critical fire weather conditions continue today
across the interior Central Coast, East Bay Hills, and interior
North Bay as another dry day with moderate to poor RH recovery is
expected for interior locations and areas of higher elevation,
especially for those above the marine layer. Winds will be breezy
to gusty as well, peaking around 35 to 45 mph, perhaps locally
higher at exposed elevations and wind prone gaps. Breezy to gusty
winds look to hold through Sunday morning, with winds gradually
easing throughout the day. There should be some improvement in
humidity as well, especially if the marine layer is able to
deepen. Widespread critical fire weather conditions are not
expected within the district today, although the fire weather
threat will increase once again for areas closer to the Central
Valley. The fire weather threat will continue to diminish Sunday
into the early part of next week with the gusty winds further
relaxing, although humidity values in the interior will be slow to
rise.
&&
.MTR WATCHES/WARNINGS/ADVISORIES...
CA...None.
PZ...Small Craft Advisory until 3 AM PDT Sunday for Mry Bay-SF Bay N
of Bay Bridge.
Gale Warning until 3 AM PDT Sunday for Pigeon Pt to Pt Pinos 10-
60 NM-Pt Arena to Pt Reyes 0-10 nm-Pt Pinos to Pt Piedras
Blancas 0-10 nm-Pt Reyes to Pigeon Pt 0-10 nm.
Small Craft Advisory until 9 AM PDT this morning for Pigeon Pt
to Pt Pinos 0-10 nm-Pt Arena to Pt Reyes 10-60 NM.
Gale Warning from 9 AM this morning to 3 AM PDT Sunday for
Pigeon Pt to Pt Pinos 0-10 nm-Pt Arena to Pt Reyes 10-60 NM.
&&
$$
SHORT TERM...KR
LONG TERM....KR
AVIATION...Sarment
MARINE...Sarment
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