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Agnew, CA

60°F
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Agnew, CA Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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Today Hourly 10-Day Radar MinuteCast®

Monthly

Air Quality Health & Activities

September

January February March April May June July August September October November December

2026

2025 2026 2027

10-Day

S
M
T
W
T
F
S
30
77°
55°
31
73°
57°
1
75°
62°
2
78°
59°
3
80°
58°
4
75°
59°
5
79°
54°
6
Sunny; breezy this afternoon
74°
52°
7
Mostly sunny
83°
58°
8
Partly sunny and very warm
90°
66°
9
Partly sunny, a shower; hot
92°
65°
10
Hot with sunshine
92°
62°
11
Mostly sunny
82°
60°
12
Mostly sunny
84°
60°
13
Intervals of clouds and sun
79°
61°
14
Plenty of sunshine
80°
60°
15
Mostly sunny
80°
61°
16
Mostly sunny
81°
61°
17
Mostly sunny
84°
62°
18
Increasing cloudiness
85°
60°
19
Mostly cloudy
80°
57°
20
Mostly sunny
83°
60°
21
Mostly cloudy
75°
60°
22
Clouds and sun
76°
58°
23
Clouds and sun
78°
58°
24
Clouds and sun
80°
57°
25
A sun-and-cloud mix
79°
58°
26
Sunshine and some clouds
75°
59°
27
Mostly sunny
80°
59°
28
Plenty of sunshine
82°
60°
29
Sunshine
83°
61°
30
Plenty of sunshine
82°
60°
1
Plenty of sunshine
82°
60°
2
Increasing clouds
83°
59°
3
Mostly cloudy
82°
60°

Temperature Graph

°F
100° 90° 80° 70° 60° Sep
Today 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo

September Weather in Agnew

Agnew's September 2026 forecast shows daily high temperatures ranging from 74° to 92°, with overnight lows between 52° and 66°. The average high for September is 82° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Agnew. See also: October | November | December.

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World North America United States California Agnew

Weather Near Agnew:

  • Oakland, CA
  • San Francisco, CA
  • San Jose, CA
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