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Weather Simi Valley: Current forecast

Simi Valley / California (CA) / United States

18.5 °C
Feels like 17.7 °C
Min 12 °C / Max 32 °C
Weather Simi Valley: Clear, 19 °C Clear
8.3 km/h WNW
Wind
22.7 km/h WNW
Gusts
1014 hPa
Pressure
0 mm
Precipitation
68 %
Humidity
0
UV index

Pollen (today)

Hazel None
Alder None
Birch None
Oak None
Grass High
Mugwort High
Ragweed High
06:28 / 19:21
Sunrise / Sunset
21:35 / 10:57
Moonrise / Moonset
Waning Moon (70 %)
Moon phase

Updated: Sep 2, 2026, 5:41 CEST Sep 1, 2026, 20:41 PDT

Today's Summary

Right now Simi Valley has clear weather. The thermometer currently shows 18.5°C. Pack a light jacket for the evening. During the day temperatures will range between 12.4°C and 31.6°C.

Hourly forecast – Simi Valley, today

Sep 1, 21:00
16 °C
Clear
Simi Valley Sep 1, 21:00: Clear, 16 °C
Sep 1, 22:00
15 °C
Clear
Simi Valley Sep 1, 22:00: Clear, 15 °C
Sep 1, 23:00
15 °C
Clear
Simi Valley Sep 1, 23:00: Clear, 15 °C
Sep 2, 00:00
15 °C
Clear
Simi Valley Sep 2, 00:00: Clear, 15 °C
Sep 2, 01:00
14 °C
Clear
Simi Valley Sep 2, 01:00: Clear, 14 °C
Sep 2, 02:00
16 °C
Clear
Simi Valley Sep 2, 02:00: Clear, 16 °C
Sep 2, 03:00
16 °C
Clear
Simi Valley Sep 2, 03:00: Clear, 16 °C
Sep 2, 04:00
15 °C
Clear
Simi Valley Sep 2, 04:00: Clear, 15 °C
Sep 2, 05:00
17 °C
Sunny
Simi Valley Sep 2, 05:00: Sunny, 17 °C
Sep 2, 06:00
18 °C
Sunny
Simi Valley Sep 2, 06:00: Sunny, 18 °C
Sep 2, 07:00
20 °C
Sunny
Simi Valley Sep 2, 07:00: Sunny, 20 °C
Sep 2, 08:00
22 °C
Sunny
Simi Valley Sep 2, 08:00: Sunny, 22 °C
Sep 2, 09:00
24 °C
Sunny
Simi Valley Sep 2, 09:00: Sunny, 24 °C
Sep 2, 10:00
26 °C
Sunny
Simi Valley Sep 2, 10:00: Sunny, 26 °C
Sep 2, 11:00
27 °C
Sunny
Simi Valley Sep 2, 11:00: Sunny, 27 °C
Sep 2, 12:00
27 °C
Sunny
Simi Valley Sep 2, 12:00: Sunny, 27 °C
Sep 2, 13:00
27 °C
Sunny
Simi Valley Sep 2, 13:00: Sunny, 27 °C
Sep 2, 14:00
25 °C
Sunny
Simi Valley Sep 2, 14:00: Sunny, 25 °C
Sep 2, 15:00
23 °C
Sunny
Simi Valley Sep 2, 15:00: Sunny, 23 °C
Sep 2, 16:00
21 °C
Sunny
Simi Valley Sep 2, 16:00: Sunny, 21 °C
Sep 2, 17:00
18 °C
Sunny
Simi Valley Sep 2, 17:00: Sunny, 18 °C
Sep 2, 18:00
17 °C
Clear
Simi Valley Sep 2, 18:00: Clear, 17 °C
Sep 2, 19:00
17 °C
Clear
Simi Valley Sep 2, 19:00: Clear, 17 °C
Sep 2, 20:00
17 °C
Clear
Simi Valley Sep 2, 20:00: Clear, 17 °C
Time
21
22
23
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
Simi Valley Sep 1, 21:00: Clear
Simi Valley Sep 1, 22:00: Clear
Simi Valley Sep 1, 23:00: Clear
Simi Valley Sep 2, 00:00: Clear
Simi Valley Sep 2, 01:00: Clear
Simi Valley Sep 2, 02:00: Clear
Simi Valley Sep 2, 03:00: Clear
Simi Valley Sep 2, 04:00: Clear
Simi Valley Sep 2, 05:00: Sunny
Simi Valley Sep 2, 06:00: Sunny
Simi Valley Sep 2, 07:00: Sunny
Simi Valley Sep 2, 08:00: Sunny
Simi Valley Sep 2, 09:00: Sunny
Simi Valley Sep 2, 10:00: Sunny
Simi Valley Sep 2, 11:00: Sunny
Simi Valley Sep 2, 12:00: Sunny
Simi Valley Sep 2, 13:00: Sunny
Simi Valley Sep 2, 14:00: Sunny
Simi Valley Sep 2, 15:00: Sunny
Simi Valley Sep 2, 16:00: Sunny
Simi Valley Sep 2, 17:00: Sunny
Simi Valley Sep 2, 18:00: Clear
Simi Valley Sep 2, 19:00: Clear
Simi Valley Sep 2, 20:00: Clear
Temperature (°C)
Chance of rain (%)
10
9
8
5
6
4
4
5
3
2
1
1
0
0
0
0
0
0
0
1
3
8
11
11
Precipitation
Wind (km/h)
N
3
ENE
4
E
4
ESE
4
E
4
ENE
6
ENE
7
ENE
4
E
6
E
3
SSE
3
SSE
4
S
7
SSW
10
SW
14
WSW
20
WSW
25
WSW
23
WSW
19
WSW
16
W
13
W
8
W
5
WNW
3
Pressure (hPa)
1015
1015
1015
1015
1015
1015
1015
1015
1015
1016
1016
1016
1016
1015
1014
1014
1013
1013
1013
1013
1014
1014
1015
1015
Humidity (%)
82 %
80 %
78 %
66 %
70 %
63 %
62 %
65 %
57 %
47 %
40 %
32 %
26 %
22 %
20 %
20 %
22 %
23 %
28 %
40 %
60 %
78 %
85 %
86 %
Cloud cover (%)
5 %
2 %
0 %
0 %
0 %
0 %
0 %
0 %
0 %
0 %
0 %
0 %
0 %
0 %
0 %
0 %
0 %
0 %
0 %
0 %
0 %
0 %
0 %
0 %

14-day weather forecast – Simi Valley

14-day trend for Simi Valley: Temperatures stay fairly stable over the period with no big swings. Lows can drop to around 12.4°C at night, with daytime highs up to 31.8°C.

Date
Sep 1
Sep 2
Sep 3
Sep 4
Sep 5
Sep 6
Sep 7
Sep 8
Sep 9
Sep 10
Sep 11
Sep 12
Sep 13
Sep 14
Simi Valley September 1, 2026: Sunny
Simi Valley September 2, 2026: Sunny
Simi Valley September 3, 2026: Sunny
Simi Valley September 4, 2026: Sunny
Simi Valley September 5, 2026: Sunny
Simi Valley September 6, 2026: Overcast
Simi Valley September 7, 2026: Light rain shower
Simi Valley September 8, 2026: Overcast
Simi Valley September 9, 2026: Sunny
Simi Valley September 10, 2026: Sunny
Simi Valley September 11, 2026: Sunny
Simi Valley September 12, 2026: Sunny
Simi Valley September 13, 2026: Sunny
Simi Valley September 14, 2026: Sunny
Temperature (°C)
Chance of rain (%)
6
2
3
3
2
57
84
8
3
3
4
5
3
1
Precipitation
1.5 mm
5.5 mm
Wind max (km/h)
22
25
25
20
17
9
9
17
23
15
17
14
16
16
Date Weather Min °C Max °C Sunrise Sunset Moonrise Moonset Moon phase
September 1, 2026 Simi Valley September 1, 2026: Sunny Sunny 12 °C 32 °C 06:28 19:21 21:35 10:57 Waning Moon (70 %)
September 2, 2026 Simi Valley September 2, 2026: Sunny Sunny 14 °C 27 °C 06:29 19:20 22:12 12:01 Last Quarter (60 %)
September 3, 2026 Simi Valley September 3, 2026: Sunny Sunny 17 °C 27 °C 06:30 19:18 22:56 13:08 Last Quarter (50 %)
September 4, 2026 Simi Valley September 4, 2026: Sunny Sunny 17 °C 27 °C 06:30 19:17 23:50 14:14 Last Quarter (39 %)
September 5, 2026 Simi Valley September 5, 2026: Sunny Sunny 18 °C 30 °C 06:31 19:16 Does not rise today 15:17 Waning Crescent (29 %)
September 6, 2026 Simi Valley September 6, 2026: Overcast Overcast 20 °C 27 °C 06:32 19:14 00:54 16:13 Waning Crescent (20 %)
September 7, 2026 Simi Valley September 7, 2026: Light rain shower Light rain shower 20 °C 24 °C 06:32 19:13 02:05 17:01 Waning Crescent (12 %)
September 8, 2026 Simi Valley September 8, 2026: Overcast Overcast 21 °C 31 °C 06:33 19:12 03:20 17:42 Waning Crescent (6 %)
September 9, 2026 Simi Valley September 9, 2026: Sunny Sunny 19 °C 29 °C 06:34 19:10 04:35 18:18 New Moon (2 %)
September 10, 2026 Simi Valley September 10, 2026: Sunny Sunny 18 °C 27 °C 06:34 19:09 05:48 18:49 New Moon (0 %)
September 11, 2026 Simi Valley September 11, 2026: Sunny Sunny 15 °C 26 °C 06:35 19:07 07:00 19:19 New Moon (0 %)
September 12, 2026 Simi Valley September 12, 2026: Sunny Sunny 15 °C 25 °C 06:36 19:06 08:10 19:49 New Moon (3 %)
September 13, 2026 Simi Valley September 13, 2026: Sunny Sunny 17 °C 27 °C 06:36 19:05 09:19 20:21 Waxing Crescent (8 %)
September 14, 2026 Simi Valley September 14, 2026: Sunny Sunny 20 °C 32 °C 06:37 19:03 10:28 20:55 Waxing Crescent (14 %)