Weather forecast for 10 daysSimi Valley, CA
Weather forecast for the weekend
Saturday Oct 17, 2026
- 91°F
- 61°F
Partly Cloudy / Wind
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 23mphNE 46°
- Humidity: 17%
- UV index: 5
- Sunrise: 7:02 am PDT
- Sunset: 6:18 pm PDT
- details ▼
Today, on Saturday, October 17, variable cloud cover will pair with strong breezes.
The day's temperature range will span from a high of a hot 91.4°F to a minimum of an enjoyable 60.8°F.
The forecast high of 91.4°F aligns more closely with September's typical high of 79.7°F than with October's usual 74.1°F.
Sunrise was at 7:02 am and sunset will be at 6:18 pm; the daylight will last for 11h and 16min.
The day's temperature range will span from a high of a hot 91.4°F to a minimum of an enjoyable 60.8°F.
The forecast high of 91.4°F aligns more closely with September's typical high of 79.7°F than with October's usual 74.1°F.
Sunrise was at 7:02 am and sunset will be at 6:18 pm; the daylight will last for 11h and 16min.
Sunday Oct 18, 2026
- 88°F
- 59°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 12mphNNW 334°
- Humidity: 28%
- UV index: 6
- Sunrise: 7:03 am PDT
- Sunset: 6:17 pm PDT
- details ▼
Tomorrow, on Sunday, October 18, clear skies and sunshine are also anticipated.
Temperatures will show considerable variation, extending from a high of a blazing 87.8°F to a low of a moderate 59°F.
Tomorrow, the maximum temperature of 87.8°F will resemble September's climate more than October's.
Sunrise will be at 7:03 am and sunset at 6:17 pm; tomorrow's daylight will last for 11h and 14min.
Temperatures will show considerable variation, extending from a high of a blazing 87.8°F to a low of a moderate 59°F.
Tomorrow, the maximum temperature of 87.8°F will resemble September's climate more than October's.
Sunrise will be at 7:03 am and sunset at 6:17 pm; tomorrow's daylight will last for 11h and 14min.
10-day overview
Daily temperatures
Warmest day: today 91°C.
Coldest day: Thursday 68°C.
Coldest day: Thursday 68°C.
Chance of precipitation
Highest chance: Thursday 70%.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- 91°F
- 61°F
Partly Cloudy / Wind
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 23mphNE 46°
- Humidity: 17%
- UV index: 5
- Sunrise: 7:02 am PDT
- Sunset: 6:18 pm PDT
- details ▼
- Sunday
- Oct 18, 2026
- 88°F
- 59°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 12mphNNW 334°
- Humidity: 28%
- UV index: 6
- Sunrise: 7:03 am PDT
- Sunset: 6:17 pm PDT
- details ▼
- Monday
- Oct 19, 2026
- 82°F
- 57°F
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 11mphS 185°
- Humidity: 42%
- UV index: 6
- Sunrise: 7:03 am PDT
- Sunset: 6:16 pm PDT
- details ▼
- Tuesday
- Oct 20, 2026
- 79°F
- 59°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 9mphSSE 158°
- Humidity: 51%
- UV index: 6
- Sunrise: 7:04 am PDT
- Sunset: 6:14 pm PDT
- details ▼
- Wednesday
- Oct 21, 2026
- 70°F
- 57°F
Rain
- Precip. probability: 60%
- Precipitation: 0.63"
- Wind: 9mphESE 104°
- Humidity: 64%
- UV index: 4
- Sunrise: 7:05 am PDT
- Sunset: 6:13 pm PDT
- details ▼
- Thursday
- Oct 22, 2026
- 68°F
- 54°F
Thunderstorms
- Precip. probability: 70%
- Precipitation: 0.24"
- Wind: 9mphSE 137°
- Humidity: 76%
- UV index: 2
- Sunrise: 7:06 am PDT
- Sunset: 6:12 pm PDT
- details ▼
- Friday
- Oct 23, 2026
- 72°F
- 54°F
Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 9mphSW 215°
- Humidity: 66%
- UV index: 5
- Sunrise: 7:07 am PDT
- Sunset: 6:11 pm PDT
- details ▼
- Saturday
- Oct 24, 2026
- 77°F
- 55°F
Partly Cloudy
- Precip. probability: 17%
- Precipitation: 0"
- Wind: 9mphENE 76°
- Humidity: 54%
- UV index: 5
- Sunrise: 7:08 am PDT
- Sunset: 6:10 pm PDT
- details ▼
- Sunday
- Oct 25, 2026
- 79°F
- 57°F
Mostly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 10mphESE 118°
- Humidity: 48%
- UV index: 4
- Sunrise: 7:09 am PDT
- Sunset: 6:09 pm PDT
- details ▼
- Monday
- Oct 26, 2026
- 75°F
- 54°F
Partly Cloudy
- Precip. probability: 18%
- Precipitation: 0"
- Wind: 10mphE 82°
- Humidity: 48%
- UV index: 5
- Sunrise: 7:09 am PDT
- Sunset: 6:08 pm PDT
- details ▼
Over the course of the next ten days, expect shifting weather, and a mix of overcast, sunny, rainy and storm-filled weather is expected.
Rainfall is expected on Wednesday and Thursday.
The temperature will vary considerably over the next several days. Forecast highs will fluctuate between 68°F and 91.4°F, while the lowest temperature will be between 53.6°F and 60.8°F.
With a high of 91.4°F, today is the hottest day; the lowest daytime temperature of the period will be reached on Thursday, peaking at 68°F.
Rainfall is expected on Wednesday and Thursday.
The temperature will vary considerably over the next several days. Forecast highs will fluctuate between 68°F and 91.4°F, while the lowest temperature will be between 53.6°F and 60.8°F.
With a high of 91.4°F, today is the hottest day; the lowest daytime temperature of the period will be reached on Thursday, peaking at 68°F.
Updated: Oct 17, 2026 @ 14:36:02 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
On Saturday, in Simi Valley, sun and clouds will mix with occasional strong winds.
Today, the maximum temperature will be 91.4°F, while the minimum temperature will be 60.8°F.
Today, the maximum temperature will be uncommonly higher than the average highest temperature of 74.1°F in October. Today, the lowest temperature will be in line with the average low temperature.
Today, the maximum temperature will be uncommonly higher than the average highest temperature of 74.1°F in October. Today, the lowest temperature will be in line with the average low temperature.
On Saturday, in Simi Valley, sunrise was at 7:02 am and sunset will be at 6:18 pm (PDT).
In Simi Valley, today, there will be 11h and 16min of daylight.
On Sunday, sun-filled conditions are expected to persist.
Tomorrow, the maximum temperature will be 87.8°F, while the minimum temperature will be 59°F.
Tomorrow, the highest temperature will be noticeably higher than the average maximum of 74.1°F in October. The lowest temperature will be in line with the average low of 57.6°F.
Tomorrow, the highest temperature will be noticeably higher than the average maximum of 74.1°F in October. The lowest temperature will be in line with the average low of 57.6°F.
On Sunday, in Simi Valley, sunrise will be at 7:03 am and sunset at 6:17 pm (PDT).
In Simi Valley, tomorrow, there will be 11h and 14min of daylight.





