Simi Valley, CA Weather Tomorrow

Find out what tomorrow's weather looks like in Simi Valley with a complete 5 day forecast featuring precipitation chances, day and night conditions, high and low temperatures in Fahrenheit and Celsius, sunrise, sunset, sky conditions, wind chill, and wind speed with direction for the Simi Valley area and around Ventura county, California.
Updated: Sat Sep 5th 2026 12:00 PM PDT
Simi Valley, CA Weather – 9-5 – Sunny
93° / 59°
Sunny
Simi Valley is set for sunshine with temperatures peaking at 93°F and dipping to 59°F. There's a very small chance of rainfall, only about 2%. Wind will be moderate, blowing around 11mph on average and gusts of 21.3mph at 5 PM. Humidity levels should be comfortable, sitting around 56% on average, the maximum being 70% at 10 PM and 21% being its lowest at 2 PM. Barometric pressure is its highest of 29.95inHg at 10 PM, a lowest point of 29.86inHg at 4 PM with an avg 29.9inHg.
Simi Valley, CA Weather – 9-6 – Sunny
83° / 65°

Weather Tomorrow

Sunny
Daytime highs will reach 83°F with lows dropping to 65°F in Simi Valley, where bright and sunny conditions. There's a moderate 36% chance of rainfall with an estimated 0.02in. Wind will be moderate, blowing around 12mph on average and gusts of 19.7mph at 5 PM. Humidity levels should be comfortable, sitting around 50% on average, the maximum being 67% at 12 AM and 27% being its lowest at 3 PM. Barometric pressure is its highest of 29.98inHg at 11 AM, a lowest point of 29.87inHg at 4 PM with an avg 29.92inHg.
Simi Valley, CA Weather – 9-7 – Sunny
88° / 65°
Sunny
Simi Valley is set for sunshine with temperatures peaking at 88°F and dipping to 65°F. There's a very small chance of rainfall, only about 1%. Wind will be moderate, blowing around 15mph on average and gusts of 25.5mph at 4 PM. Humidity levels should be comfortable, sitting around 32% on average, the maximum being 57% at 12 AM and 17% being its lowest at 4 PM. Barometric pressure is its highest of 29.93inHg at 8 AM, a lowest point of 29.85inHg at 4 PM with an avg 29.9inHg.
Simi Valley, CA Weather – 9-8 – Overcast
86° / 70°
Overcast
Highs will reach 86°F with lows near 70°F in Simi Valley, where cloud-filled skies are. There's a very small chance of rainfall, only about 7%. Wind will be moderate, blowing around 11mph on average and gusts of 12.5mph at 9 AM. The air will be relatively dry with average humidity levels below 30%, the maximum being 36% at 11 PM and 12% being its lowest at 11 AM. Barometric pressure is its highest of 29.94inHg at 9 PM, a lowest point of 29.9inHg at 5 PM with an avg 29.92inHg.
Simi Valley, CA Weather – 9-9 – Sunny
98° / 73°
Sunny
In Simi Valley, bright and sunny conditions with highs near 98°F and lows around 73°F. There's a very small chance of rainfall, only about 3%. Winds will be light at 9mph and gusts of 19.9mph at 2 PM. The air will be relatively dry with average humidity levels below 30%, the maximum being 40% at 9 PM and 16% being its lowest at 12 PM. Barometric pressure is its highest of 29.99inHg at 10 PM, a lowest point of 29.88inHg at 5 AM with an avg 29.93inHg.
Simi Valley, CA Weather – 9-10 – Sunny
95° / 78°
Sunny
In Simi Valley, a sunny day is likely with a high near 95°F and a low around 78°F. There's a very small chance of rainfall, only about 1%. Wind will be moderate, blowing around 14mph on average and gusts of 24.6mph at 2 PM. Humidity levels should be comfortable, sitting around 32% on average, the maximum being 42% at 5 AM and 22% being its lowest at 5 PM. Barometric pressure is its highest of 29.98inHg at 8 AM, a lowest point of 29.84inHg at 11 PM with an avg 29.92inHg.

Currently

Sunny 92°F
29.93 inHg.
Barometer
26%
Humidity
SSE 10.4 mph
Wind
Sunny

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