10-day forecast for Simi Valley, CA: 62° to 99°, with precipitation expected on 0 days. The table below breaks each day into morning, afternoon, evening and overnight.
99°
Best day: Monday, August 10
87°
Worst day: Friday, August 14
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 0995° / 67°0
Morning78°feels 77°
Afternoon95°feels 92°
Evening79°feels 79°
Overnight72°feels 72°
95 °
Simi Valley, Sunday, 9 August
Mostly clear. High 95°, low 67°.
Pressure29.83 inHg
Wind5.8 mph SW
Humidity21%
Visibility6.2 mi
Dew point52°
Mon, 1099° / 68°0
Morning77°feels 76°
Afternoon99°feels 97°
Evening77°feels 77°
Overnight71°feels 70°
99 °
Simi Valley, Monday, 10 August
Mostly clear. High 99°, low 68°.
Pressure29.88 inHg
Wind6.3 mph SW
Humidity22%
Visibility6.2 mi
Dew point51°
Tue, 1196° / 70°0
Morning79°feels 78°
Afternoon96°feels 93°
Evening75°feels 74°
Overnight72°feels 71°
96 °
Simi Valley, Tuesday, 11 August
Clear. High 96°, low 70°.
Pressure29.94 inHg
Wind6.3 mph SW
Humidity23%
Visibility6.2 mi
Dew point49°
Wed, 1292° / 67°0
Morning76°feels 75°
Afternoon92°feels 90°
Evening72°feels 71°
Overnight70°feels 70°
92 °
Simi Valley, Wednesday, 12 August
Partly cloudy. High 92°, low 67°.
Pressure29.88 inHg
Wind8 mph SW
Humidity28%
Visibility6.2 mi
Dew point52°
Thu, 1389° / 66°0
Morning72°feels 71°
Afternoon82°feels 82°
Evening82°feels 81°
Overnight67°feels 66°
89 °
Simi Valley, Thursday, 13 August
Partly cloudy. High 89°, low 66°.
Pressure29.91 inHg
Wind8.8 mph SW
Humidity39%
Visibility—
Dew point53°
Fri, 1487° / 65°0
Morning71°feels 71°
Afternoon80°feels 80°
Evening82°feels 81°
Overnight65°feels 65°
87 °
Simi Valley, Friday, 14 August
Overcast. High 87°, low 65°.
Pressure29.97 inHg
Wind8.9 mph W
Humidity40%
Visibility—
Dew point51°
Sat, 1593° / 62°0
Morning69°feels 68°
Afternoon86°feels 83°
Evening82°feels 80°
Overnight62°feels 62°
93 °
Simi Valley, Saturday, 15 August
Clear. High 93°, low 62°.
Pressure30.00 inHg
Wind13.5 mph W
Humidity26%
Visibility—
Dew point45°
Sun, 1694° / 64°0
Morning71°feels 69°
Afternoon88°feels 84°
Evening83°feels 80°
Overnight66°feels 65°
94 °
Simi Valley, Sunday, 16 August
Partly cloudy. High 94°, low 64°.
Pressure30.03 inHg
Wind13.2 mph W
Humidity21%
Visibility—
Dew point40°
Mon, 1796° / 68°0
Morning76°feels 73°
Afternoon91°feels 87°
Evening85°feels 83°
Overnight71°feels 71°
96 °
Simi Valley, Monday, 17 August
Mostly clear. High 96°, low 68°.
Pressure30.00 inHg
Wind12.4 mph W
Humidity18%
Visibility—
Dew point39°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in Simi Valley, CA around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.