Dailymet

Weather Cupertino: Current forecast

Cupertino / California (CA) / United States

35.5 °C
Feels like 35.2 °C
Min 21 °C / Max 36 °C
Weather Cupertino: Sunny, 36 °C Sunny
6.3 mph NNW
Wind
6.5 mph NNW
Gusts
1015 hPa
Pressure
0 mm
Precipitation
30 %
Humidity
7.6
UV index

Pollen (today)

Hazel None
Alder None
Birch None
Oak None
Grass Low
Mugwort Low
Ragweed High
06:46 / 19:24
Sunrise / Sunset
05:59 / 19:04
Moonrise / Moonset
New Moon (0 %)
Moon phase

Updated: Sep 10, 2026, 21:25 CEST Sep 10, 2026, 12:25 PDT

Today's Summary

If you head out in Cupertino today, you'll see a sunny sky. The thermometer currently shows 35.5°C. UV radiation is high today – sun cream and sunglasses are essential. During the day temperatures will range between 20.8°C and 36°C.

Hourly forecast – Cupertino, today

Sep 10, 13:00
36 °C
Partly cloudy
Cupertino Sep 10, 13:00: Partly cloudy, 36 °C
Sep 10, 14:00
35 °C
Overcast
Cupertino Sep 10, 14:00: Overcast, 35 °C
Sep 10, 15:00
33 °C
Overcast
Cupertino Sep 10, 15:00: Overcast, 33 °C
Sep 10, 16:00
31 °C
Overcast
Cupertino Sep 10, 16:00: Overcast, 31 °C
Sep 10, 17:00
27 °C
Overcast
Cupertino Sep 10, 17:00: Overcast, 27 °C
Sep 10, 18:00
25 °C
Clear
Cupertino Sep 10, 18:00: Clear, 25 °C
Sep 10, 19:00
23 °C
Clear
Cupertino Sep 10, 19:00: Clear, 23 °C
Sep 10, 20:00
22 °C
Clear
Cupertino Sep 10, 20:00: Clear, 22 °C
Sep 10, 21:00
21 °C
Clear
Cupertino Sep 10, 21:00: Clear, 21 °C
Sep 10, 22:00
20 °C
Clear
Cupertino Sep 10, 22:00: Clear, 20 °C
Sep 10, 23:00
19 °C
Clear
Cupertino Sep 10, 23:00: Clear, 19 °C
Sep 11, 00:00
18 °C
Clear
Cupertino Sep 11, 00:00: Clear, 18 °C
Sep 11, 01:00
18 °C
Clear
Cupertino Sep 11, 01:00: Clear, 18 °C
Sep 11, 02:00
17 °C
Clear
Cupertino Sep 11, 02:00: Clear, 17 °C
Sep 11, 03:00
17 °C
Clear
Cupertino Sep 11, 03:00: Clear, 17 °C
Sep 11, 04:00
17 °C
Clear
Cupertino Sep 11, 04:00: Clear, 17 °C
Sep 11, 05:00
17 °C
Sunny
Cupertino Sep 11, 05:00: Sunny, 17 °C
Sep 11, 06:00
19 °C
Sunny
Cupertino Sep 11, 06:00: Sunny, 19 °C
Sep 11, 07:00
22 °C
Sunny
Cupertino Sep 11, 07:00: Sunny, 22 °C
Sep 11, 08:00
25 °C
Partly cloudy
Cupertino Sep 11, 08:00: Partly cloudy, 25 °C
Sep 11, 09:00
28 °C
Sunny
Cupertino Sep 11, 09:00: Sunny, 28 °C
Sep 11, 10:00
29 °C
Sunny
Cupertino Sep 11, 10:00: Sunny, 29 °C
Sep 11, 11:00
31 °C
Sunny
Cupertino Sep 11, 11:00: Sunny, 31 °C
Sep 11, 12:00
31 °C
Sunny
Cupertino Sep 11, 12:00: Sunny, 31 °C
Time
13
14
15
16
17
18
19
20
21
22
23
00
01
02
03
04
05
06
07
08
09
10
11
12
Cupertino Sep 10, 13:00: Partly cloudy
Cupertino Sep 10, 14:00: Overcast
Cupertino Sep 10, 15:00: Overcast
Cupertino Sep 10, 16:00: Overcast
Cupertino Sep 10, 17:00: Overcast
Cupertino Sep 10, 18:00: Clear
Cupertino Sep 10, 19:00: Clear
Cupertino Sep 10, 20:00: Clear
Cupertino Sep 10, 21:00: Clear
Cupertino Sep 10, 22:00: Clear
Cupertino Sep 10, 23:00: Clear
Cupertino Sep 11, 00:00: Clear
Cupertino Sep 11, 01:00: Clear
Cupertino Sep 11, 02:00: Clear
Cupertino Sep 11, 03:00: Clear
Cupertino Sep 11, 04:00: Clear
Cupertino Sep 11, 05:00: Sunny
Cupertino Sep 11, 06:00: Sunny
Cupertino Sep 11, 07:00: Sunny
Cupertino Sep 11, 08:00: Partly cloudy
Cupertino Sep 11, 09:00: Sunny
Cupertino Sep 11, 10:00: Sunny
Cupertino Sep 11, 11:00: Sunny
Cupertino Sep 11, 12:00: Sunny
Temperature (°C)
Chance of rain (%)
3
9
9
9
9
1
1
1
2
1
1
1
1
2
2
1
1
1
2
2
1
0
0
0
Precipitation
Wind (mph)
NNW
9
NW
9
NW
9
NW
7
NW
6
NW
5
NW
3
W
2
WSW
2
WSW
2
SW
2
SW
2
SW
2
SW
2
SSW
3
SSW
2
SSW
3
SW
1
NNW
1
NNW
3
NNW
5
NNW
6
NNW
8
NNW
9
Pressure (hPa)
1012
1012
1012
1012
1013
1013
1014
1014
1013
1013
1013
1013
1013
1013
1012
1013
1013
1014
1014
1014
1014
1013
1011
1011
Humidity (%)
17 %
17 %
18 %
20 %
26 %
31 %
34 %
36 %
36 %
38 %
40 %
43 %
46 %
48 %
50 %
45 %
44 %
39 %
31 %
26 %
22 %
20 %
25 %
23 %
Cloud cover (%)
50 %
100 %
100 %
100 %
100 %
16 %
5 %
17 %
25 %
5 %
3 %
0 %
0 %
0 %
0 %
0 %
0 %
0 %
23 %
30 %
5 %
0 %
0 %
0 %

14-day weather forecast – Cupertino

14-day trend for Cupertino: Temperatures stay fairly stable over the period with no big swings. Lows can drop to around 11.3°C at night, with daytime highs up to 36°C.

Date
Sep 10
Sep 11
Sep 12
Sep 13
Sep 14
Sep 15
Sep 16
Sep 17
Sep 18
Sep 19
Sep 20
Sep 21
Sep 22
Sep 23
Cupertino September 10, 2026: Sunny
Cupertino September 11, 2026: Sunny
Cupertino September 12, 2026: Sunny
Cupertino September 13, 2026: Sunny
Cupertino September 14, 2026: Sunny
Cupertino September 15, 2026: Sunny
Cupertino September 16, 2026: Sunny
Cupertino September 17, 2026: Sunny
Cupertino September 18, 2026: Sunny
Cupertino September 19, 2026: Sunny
Cupertino September 20, 2026: Sunny
Cupertino September 21, 2026: Sunny
Cupertino September 22, 2026: Sunny
Cupertino September 23, 2026: Partly cloudy
Temperature (°C)
Chance of rain (%)
2
1
4
3
1
2
2
2
3
3
2
0
1
3
Precipitation
Wind max (mph)
9
9
10
9
8
3
6
7
9
9
6
4
6
6
Date Weather Min °C Max °C Sunrise Sunset Moonrise Moonset Moon phase
September 10, 2026 Cupertino September 10, 2026: Sunny Sunny 21 °C 36 °C 06:46 19:24 05:59 19:04 New Moon (0 %)
September 11, 2026 Cupertino September 11, 2026: Sunny Sunny 15 °C 31 °C 06:46 19:22 07:13 19:32 New Moon (0 %)
September 12, 2026 Cupertino September 12, 2026: Sunny Sunny 12 °C 25 °C 06:47 19:21 08:26 19:59 New Moon (3 %)
September 13, 2026 Cupertino September 13, 2026: Sunny Sunny 11 °C 26 °C 06:48 19:19 09:37 20:29 Waxing Crescent (8 %)
September 14, 2026 Cupertino September 14, 2026: Sunny Sunny 13 °C 30 °C 06:49 19:17 10:48 21:01 Waxing Crescent (14 %)
September 15, 2026 Cupertino September 15, 2026: Sunny Sunny 12 °C 30 °C 06:50 19:16 11:57 21:38 Waxing Crescent (23 %)
September 16, 2026 Cupertino September 16, 2026: Sunny Sunny 13 °C 31 °C 06:51 19:14 13:04 22:22 First Quarter (32 %)
September 17, 2026 Cupertino September 17, 2026: Sunny Sunny 12 °C 32 °C 06:51 19:13 14:04 23:11 First Quarter (42 %)
September 18, 2026 Cupertino September 18, 2026: Sunny Sunny 13 °C 26 °C 06:52 19:11 14:58 Does not set today First Quarter (53 %)
September 19, 2026 Cupertino September 19, 2026: Sunny Sunny 13 °C 27 °C 06:53 19:10 15:43 00:06 First Quarter (63 %)
September 20, 2026 Cupertino September 20, 2026: Sunny Sunny 12 °C 29 °C 06:54 19:08 16:21 01:05 Waxing Moon (73 %)
September 21, 2026 Cupertino September 21, 2026: Sunny Sunny 17 °C 34 °C 06:55 19:07 16:53 02:06 Waxing Moon (82 %)
September 22, 2026 Cupertino September 22, 2026: Sunny Sunny 18 °C 33 °C 06:56 19:05 17:21 03:06 Waxing Moon (89 %)
September 23, 2026 Cupertino September 23, 2026: Partly cloudy Partly cloudy 19 °C 33 °C 06:56 19:04 17:45 04:06 Waxing Moon (95 %)