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Weather Sunnyvale: Current forecast

Sunnyvale / California (CA) / United States

18.6 °C
Feels like 16.2 °C
Min 17 °C / Max 33 °C
Weather Sunnyvale: Clear, 19 °C Clear
3.6 km/h SSW
Wind
17.3 km/h SSW
Gusts
1019 hPa
Pressure
0 mm
Precipitation
30 %
Humidity
0
UV index

Pollen (today)

Hazel None
Alder None
Birch None
Oak None
Grass None
Mugwort None
Ragweed Low
07:18 / 18:28
Sunrise / Sunset
14:18 / 23:54
Moonrise / Moonset
First Quarter (47 %)
Moon phase

Updated: Oct 17, 2026, 9:00 CEST Oct 17, 2026, 0:00 PDT

Today's Summary

If you head out in Sunnyvale today, you'll see a clear sky. The thermometer currently shows 18.6°C. Pack a light jacket for the evening. During the day temperatures will range between 17°C and 32.6°C.

Hourly forecast – Sunnyvale, today

Oct 17, 01:00
18 °C
Clear
Sunnyvale Oct 17, 01:00: Clear, 18 °C
Oct 17, 02:00
18 °C
Clear
Sunnyvale Oct 17, 02:00: Clear, 18 °C
Oct 17, 03:00
17 °C
Clear
Sunnyvale Oct 17, 03:00: Clear, 17 °C
Oct 17, 04:00
17 °C
Clear
Sunnyvale Oct 17, 04:00: Clear, 17 °C
Oct 17, 05:00
17 °C
Clear
Sunnyvale Oct 17, 05:00: Clear, 17 °C
Oct 17, 06:00
18 °C
Sunny
Sunnyvale Oct 17, 06:00: Sunny, 18 °C
Oct 17, 07:00
23 °C
Sunny
Sunnyvale Oct 17, 07:00: Sunny, 23 °C
Oct 17, 08:00
27 °C
Sunny
Sunnyvale Oct 17, 08:00: Sunny, 27 °C
Oct 17, 09:00
29 °C
Sunny
Sunnyvale Oct 17, 09:00: Sunny, 29 °C
Oct 17, 10:00
31 °C
Sunny
Sunnyvale Oct 17, 10:00: Sunny, 31 °C
Oct 17, 11:00
32 °C
Sunny
Sunnyvale Oct 17, 11:00: Sunny, 32 °C
Oct 17, 12:00
33 °C
Sunny
Sunnyvale Oct 17, 12:00: Sunny, 33 °C
Oct 17, 13:00
33 °C
Sunny
Sunnyvale Oct 17, 13:00: Sunny, 33 °C
Oct 17, 14:00
32 °C
Sunny
Sunnyvale Oct 17, 14:00: Sunny, 32 °C
Oct 17, 15:00
31 °C
Sunny
Sunnyvale Oct 17, 15:00: Sunny, 31 °C
Oct 17, 16:00
25 °C
Sunny
Sunnyvale Oct 17, 16:00: Sunny, 25 °C
Oct 17, 17:00
21 °C
Clear
Sunnyvale Oct 17, 17:00: Clear, 21 °C
Oct 17, 18:00
20 °C
Clear
Sunnyvale Oct 17, 18:00: Clear, 20 °C
Oct 17, 19:00
19 °C
Clear
Sunnyvale Oct 17, 19:00: Clear, 19 °C
Oct 17, 20:00
18 °C
Clear
Sunnyvale Oct 17, 20:00: Clear, 18 °C
Oct 17, 21:00
17 °C
Clear
Sunnyvale Oct 17, 21:00: Clear, 17 °C
Oct 17, 22:00
17 °C
Clear
Sunnyvale Oct 17, 22:00: Clear, 17 °C
Oct 17, 23:00
16 °C
Clear
Sunnyvale Oct 17, 23:00: Clear, 16 °C
Oct 18, 00:00
16 °C
Clear
Sunnyvale Oct 18, 00:00: Clear, 16 °C
Time
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
00
Sunnyvale Oct 17, 01:00: Clear
Sunnyvale Oct 17, 02:00: Clear
Sunnyvale Oct 17, 03:00: Clear
Sunnyvale Oct 17, 04:00: Clear
Sunnyvale Oct 17, 05:00: Clear
Sunnyvale Oct 17, 06:00: Sunny
Sunnyvale Oct 17, 07:00: Sunny
Sunnyvale Oct 17, 08:00: Sunny
Sunnyvale Oct 17, 09:00: Sunny
Sunnyvale Oct 17, 10:00: Sunny
Sunnyvale Oct 17, 11:00: Sunny
Sunnyvale Oct 17, 12:00: Sunny
Sunnyvale Oct 17, 13:00: Sunny
Sunnyvale Oct 17, 14:00: Sunny
Sunnyvale Oct 17, 15:00: Sunny
Sunnyvale Oct 17, 16:00: Sunny
Sunnyvale Oct 17, 17:00: Clear
Sunnyvale Oct 17, 18:00: Clear
Sunnyvale Oct 17, 19:00: Clear
Sunnyvale Oct 17, 20:00: Clear
Sunnyvale Oct 17, 21:00: Clear
Sunnyvale Oct 17, 22:00: Clear
Sunnyvale Oct 17, 23:00: Clear
Sunnyvale Oct 18, 00:00: Clear
Temperature (°C)
Chance of rain (%)
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
Precipitation
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Wind (km/h)
S
4
SSW
4
S
3
S
3
S
3
S
3
NE
1
N
4
N
6
N
7
N
8
N
10
NNW
11
NNW
11
NNW
10
NNW
9
NW
7
NNW
4
NW
3
WNW
3
W
3
WSW
3
SSW
3
SW
3
Pressure (hPa)
1018
1018
1018
1018
1018
1018
1018
1018
1018
1017
1016
1015
1014
1014
1014
1014
1015
1015
1015
1015
1015
1015
1015
1015
Humidity (%)
31 %
30 %
29 %
28 %
28 %
27 %
22 %
18 %
16 %
15 %
13 %
12 %
12 %
12 %
14 %
21 %
27 %
31 %
33 %
33 %
33 %
33 %
34 %
35 %
Cloud cover (%)
0 %
0 %
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 – Sunnyvale

14-day trend for Sunnyvale: Forecasts suggest a marked cooldown in the second week. Lows can drop to around 6.1°C at night, with daytime highs up to 32.6°C.

Date
Oct 17
Oct 18
Oct 19
Oct 20
Oct 21
Oct 22
Oct 23
Oct 24
Oct 25
Oct 26
Oct 27
Oct 28
Oct 29
Oct 30
Sunnyvale October 17, 2026: Sunny
Sunnyvale October 18, 2026: Sunny
Sunnyvale October 19, 2026: Overcast
Sunnyvale October 20, 2026: Overcast
Sunnyvale October 21, 2026: Sunny
Sunnyvale October 22, 2026: Sunny
Sunnyvale October 23, 2026: Sunny
Sunnyvale October 24, 2026: Sunny
Sunnyvale October 25, 2026: Overcast
Sunnyvale October 26, 2026: Sunny
Sunnyvale October 27, 2026: Overcast
Sunnyvale October 28, 2026: Patchy rain possible
Sunnyvale October 29, 2026: Overcast
Sunnyvale October 30, 2026: Overcast
Temperature (°C)
Chance of rain (%)
0
1
12
26
7
6
5
2
10
36
17
38
17
72
Precipitation
—
—
—
0.1 mm
—
—
—
—
—
0.6 mm
0.1 mm
0.3 mm
—
3.1 mm
Wind max (km/h)
11
13
14
12
10
7
14
10
11
13
11
13
11
7
Date Weather Min °C Max °C Sunrise Sunset Moonrise Moonset Moon phase
October 17, 2026 Sunnyvale October 17, 2026: Sunny Sunny 17 °C 33 °C 07:18 18:28 14:18 23:54 First Quarter (47 %)
October 18, 2026 Sunnyvale October 18, 2026: Sunny Sunny 10 °C 28 °C 07:19 18:27 14:53 Does not set today First Quarter (58 %)
October 19, 2026 Sunnyvale October 19, 2026: Overcast Overcast 9 °C 21 °C 07:20 18:26 15:22 00:55 First Quarter (68 %)
October 20, 2026 Sunnyvale October 20, 2026: Overcast Overcast 8 °C 21 °C 07:20 18:24 15:47 01:55 Waxing Moon (77 %)
October 21, 2026 Sunnyvale October 21, 2026: Sunny Sunny 9 °C 24 °C 07:21 18:23 16:11 02:54 Waxing Moon (86 %)
October 22, 2026 Sunnyvale October 22, 2026: Sunny Sunny 7 °C 21 °C 07:22 18:22 16:33 03:53 Waxing Moon (92 %)
October 23, 2026 Sunnyvale October 23, 2026: Sunny Sunny 8 °C 22 °C 07:23 18:20 16:56 04:52 Full Moon (97 %)
October 24, 2026 Sunnyvale October 24, 2026: Sunny Sunny 8 °C 22 °C 07:24 18:19 17:20 05:53 Full Moon (100 %)
October 25, 2026 Sunnyvale October 25, 2026: Overcast Overcast 7 °C 21 °C 07:25 18:18 17:47 06:57 Full Moon (100 %)
October 26, 2026 Sunnyvale October 26, 2026: Sunny Sunny 7 °C 17 °C 07:26 18:17 18:19 08:03 Full Moon (98 %)
October 27, 2026 Sunnyvale October 27, 2026: Overcast Overcast 6 °C 19 °C 07:27 18:16 18:57 09:12 Waning Moon (94 %)
October 28, 2026 Sunnyvale October 28, 2026: Patchy rain possible Patchy rain possible 11 °C 18 °C 07:28 18:14 19:45 10:21 Waning Moon (88 %)
October 29, 2026 Sunnyvale October 29, 2026: Overcast Overcast 9 °C 20 °C 07:29 18:13 20:42 11:27 Waning Moon (80 %)
October 30, 2026 Sunnyvale October 30, 2026: Overcast Overcast 9 °C 17 °C 07:30 18:12 21:48 12:27 Waning Moon (71 %)
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