Grossmont, CA Weather Forecast
Local 7-day forecast
Mostly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Grossmont, CA in one place.
Mostly cloudy, with a low around 63. South wind around 5 mph.
Local Weather Overview
This forecast page for Grossmont, CA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Sep 16, 2026 3:02 AM PDT.
The active forecast window currently covers Sep 16 to Sep 22, 2026 for Grossmont, CA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 22, 2026
- Latest sync
- Sep 16, 2026 3:02 AM PDT
- Forecast office
- SGX
- Source
- NOAA / NWS
Daily Outlook
This Week in Grossmont
Saturday looks like the warmest upcoming period in Grossmont at 80 degrees F.
Thursday Night is the coolest period ahead with temperatures near 62 degrees F.
The strongest winds are forecast for Wednesday at about 5 to 10 mph S.
The forecast from Sep 16 through Sep 22 stays mostly dry.
Forecast Details
- Last updated
- Sep 16, 2026 3:02 AM PDT
- Coverage
- 7 days
- Time zone
- America/Los_Angeles
- Forecast office
- SGX
- Radar station
- KNKX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly sunny, with a high near 77. South wind 5 to 10 mph.
Mostly cloudy, with a low around 63. Southwest wind 0 to 5 mph.
Mostly sunny, with a high near 78. North wind 5 to 10 mph, with gusts as high as 20 mph.
Partly cloudy, with a low around 62. North wind 5 to 10 mph.
Sunny, with a high near 79.
Mostly clear, with a low around 62.
Sunny, with a high near 80.
Partly cloudy, with a low around 62.
Mostly sunny, with a high near 79.
Partly cloudy, with a low around 63.
Mostly sunny, with a high near 78.
Partly cloudy, with a low around 63.
Sunny, with a high near 79.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Sep 16
|
Mostly Cloudy
|
63°F |
5 mph
S
|
|
Wednesday
Sep 16
|
Partly Sunny
|
77°F |
5 to 10 mph
S
|
|
Wednesday Night
Sep 16
|
Mostly Cloudy
|
63°F |
0 to 5 mph
SW
|
|
Thursday
Sep 17
|
Mostly Sunny
|
78°F |
5 to 10 mph
N
|
|
Thursday Night
Sep 17
|
Partly Cloudy
|
62°F |
5 to 10 mph
N
|
|
Friday
Sep 18
|
Sunny
|
79°F |
5 to 10 mph
N
|
|
Friday Night
Sep 18
|
Mostly Clear
|
62°F |
0 to 10 mph
NW
|
|
Saturday
Sep 19
|
Sunny
|
80°F |
5 to 10 mph
W
|
|
Saturday Night
Sep 19
|
Partly Cloudy
|
62°F |
0 to 5 mph
W
|
|
Sunday
Sep 20
|
Mostly Sunny
|
79°F |
5 to 10 mph
S
|
|
Sunday Night
Sep 20
|
Partly Cloudy
|
63°F |
0 to 10 mph
SW
|
|
Monday
Sep 21
|
Mostly Sunny
|
78°F |
0 to 10 mph
SW
|
|
Monday Night
Sep 21
|
Partly Cloudy
|
63°F |
5 mph
W
|
|
Tuesday
Sep 22
|
Sunny
|
79°F |
5 to 10 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grossmont.