Expires:202512211100;;929884
FPUS56 KSGX 201917
ZFPSGX

Zone Forecast Product for Extreme Southwest California
National Weather Service San Diego CA
1116 AM PST Sat Dec 20 2025


CAZ048-211100-
San Bernardino and Riverside County Valleys-The Inland Empire-
Including the cities of Riverside, San Bernardino, Ontario, 
Moreno Valley, Fontana, Rancho Cucamonga, and Corona
1116 AM PST Sat Dec 20 2025

.TONIGHT...Mostly clear this evening...becoming partly cloudy.
Lows 44 to 48 in wind sheltered areas to 48 to 55 in warmer
locations. Light winds.
.SUNDAY...Partly cloudy. Highs 72 to 77. Light winds.
.SUNDAY NIGHT...Partly cloudy. Lows 44 to 48 in wind sheltered
areas to 49 to 55 in warmer locations. Light winds.
.MONDAY...Partly cloudy. Highs 73 to 77. Light winds becoming
west to 10 mph in the afternoon.
.MONDAY NIGHT...Partly cloudy. Lows 46 to 50 in wind sheltered
areas to 50 to 56 in warmer locations. Light winds.
.TUESDAY...Mostly cloudy in the morning, then partly cloudy with
a slight chance of showers in the afternoon. Highs 66 to 70.
.TUESDAY NIGHT...Showers. Patchy fog overnight. Lows 48 to 55.
.WEDNESDAY...Showers. Patchy fog in the morning. Patchy fog in
the afternoon. Locally heavy rainfall possible. Local visibility
one quarter mile or less at times in the afternoon. Highs 61 to
65.
.WEDNESDAY NIGHT...Showers. Patchy fog. Locally heavy rainfall
possible. Local visibility one quarter mile or less at times.
Lows 49 to 54.
.CHRISTMAS DAY...Showers. Patchy fog. Locally heavy rainfall
possible. Local visibility one quarter mile or less at times.
Highs 61 to 66.
.THURSDAY NIGHT...Showers. Patchy fog. Lows 46 to 52.
.FRIDAY...Patchy fog in the morning. Showers likely. Highs 60 to
65.
.FRIDAY NIGHT...Mostly cloudy in the evening...becoming partly
cloudy. A chance of showers. Lows 43 to 49.
.SATURDAY...Partly cloudy with a chance of showers. Highs 59 to
64.

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