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Acorn, CA

54°F
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Acorn, 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
66°
55°
31
71°
55°
1
71°
53°
2
Fog to sun
74°
59°
3
Pleasant with clouds and sun
71°
60°
4
Mostly cloudy
73°
53°
5
Beautiful with periods of sun
73°
53°
6
Partly sunny and beautiful
73°
58°
7
Pleasant with clouds and sun
76°
56°
8
Mostly sunny and humid
76°
57°
9
Humid with a shower in places
72°
61°
10
Partly sunny
74°
57°
11
Partly sunny
73°
59°
12
Partly sunny
70°
59°
13
Mostly sunny
73°
58°
14
Mostly sunny
72°
57°
15
Partly sunny and warmer
84°
62°
16
A sun-and-cloud mix
77°
59°
17
Times of clouds and sun
78°
59°
18
Mostly sunny
74°
58°
19
Partly sunny
76°
58°
20
Partly sunny
77°
59°
21
Partly sunny
77°
59°
22
Times of sun and clouds
76°
58°
23
Partial sunshine
76°
58°
24
Sunny
77°
57°
25
Sunshine and a few clouds
77°
58°
26
Mostly sunny
78°
59°
27
Rather cloudy
79°
59°
28
Mostly sunny
78°
58°
29
Plenty of sunshine
78°
59°
30
Sunny
77°
57°
1
Mostly sunny
78°
58°
2
Mostly sunny
77°
57°
3
Partly sunny
76°
56°

Temperature Graph

°F
90° 82° 74° 66° 58° 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 Acorn

Acorn's September 2026 forecast shows daily high temperatures ranging from 70° to 84°, with overnight lows between 53° and 62°. The average high for September is 76° with an average low of 58°. 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 Acorn. See also: October | November | December.

Further Ahead

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World North America United States California Acorn

Weather Near Acorn:

  • San Luis Obispo, CA
  • Santa Barbara, CA
  • Santa Maria, CA
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