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September weather forecast in Napa
30 days
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
30 days
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun
Sunday
Mon
Monday
Tue
Tuesday
Wed
Wednesday
Thu
Thursday
Fri
Friday
Sat
Saturday
1
+27
+19
1 September, sun
+27
+19
Feels like
+26
754 mmHg
44%
4
m/s
SW
1 September, Sunday. day, 27°; night, 19°; clear
2
+27
+17
2 September, mon
+27
+17
Feels like
+26
754 mmHg
40%
4.3
m/s
SW
2 September, Monday. day, 27°; night, 17°; clear
3
+25
+17
3 September, tue
+25
+17
Feels like
+24
753 mmHg
46%
4.5
m/s
SW
3 September, Tuesday. day, 25°; night, 17°; clear
4
+26
+18
4 September, wed
+26
+18
Feels like
+25
754 mmHg
50%
4.4
m/s
W
4 September, Wednesday. day, 26°; night, 18°; clear
5
+28
+19
5 September, thu
+28
+19
Feels like
+27
754 mmHg
37%
4
m/s
W
5 September, Thursday. day, 28°; night, 19°; clear
6
+27
+18
6 September, fri
+27
+18
Feels like
+26
754 mmHg
40%
4.5
m/s
W
6 September, Friday. day, 27°; night, 18°; clear
7
+26
+18
7 September, sat
+26
+18
Feels like
+25
754 mmHg
43%
4.8
m/s
W
7 September, Saturday. day, 26°; night, 18°; clear
8
+27
+18
8 September, sun
+27
+18
Feels like
+26
754 mmHg
47%
3.9
m/s
W
8 September, Sunday. day, 27°; night, 18°; clear
9
+27
+18
9 September, mon
+27
+18
Feels like
+26
754 mmHg
43%
4
m/s
W
9 September, Monday. day, 27°; night, 18°; clear
10
+26
+17
10 September, tue
+26
+17
Feels like
+26
755 mmHg
46%
3.7
m/s
W
10 September, Tuesday. day, 26°; night, 17°; clear
11
+24
+16
11 September, wed
+24
+16
Feels like
+24
755 mmHg
55%
4.5
m/s
W
11 September, Wednesday. day, 24°; night, 16°; clear
12
+23
+15
12 September, thu
+23
+15
Feels like
+22
754 mmHg
62%
4
m/s
W
12 September, Thursday. day, 23°; night, 15°; clear
13
+23
+15
13 September, fri
+23
+15
Feels like
+22
754 mmHg
62%
4.5
m/s
W
13 September, Friday. day, 23°; night, 15°; clear
14
+23
+15
14 September, sat
+23
+15
Feels like
+22
755 mmHg
58%
4.9
m/s
W
14 September, Saturday. day, 23°; night, 15°; clear
15
+23
+15
15 September, sun
+23
+15
Feels like
+23
756 mmHg
55%
4.1
m/s
W
15 September, Sunday. day, 23°; night, 15°; clear
16
+24
+17
16 September, mon
+24
+17
Feels like
+24
755 mmHg
55%
4.3
m/s
W
16 September, Monday. day, 24°; night, 17°; clear
17
+25
+17
17 September, tue
+25
+17
Feels like
+24
755 mmHg
50%
4.4
m/s
W
17 September, Tuesday. day, 25°; night, 17°; clear
18
+26
+18
18 September, wed
+26
+18
Feels like
+25
755 mmHg
47%
4
m/s
SW
18 September, Wednesday. day, 26°; night, 18°; clear
19
+25
+18
19 September, thu
+25
+18
Feels like
+25
755 mmHg
51%
4.3
m/s
W
19 September, Thursday. day, 25°; night, 18°; clear
20
+24
+16
20 September, fri
+24
+16
Feels like
+23
754 mmHg
51%
5
m/s
SW
20 September, Friday. day, 24°; night, 16°; clear
21
+24
+16
21 September, sat
+24
+16
Feels like
+23
755 mmHg
50%
4.5
m/s
W
21 September, Saturday. day, 24°; night, 16°; clear
22
+26
+18
22 September, sun
+26
+18
Feels like
+25
756 mmHg
43%
4
m/s
W
22 September, Sunday. day, 26°; night, 18°; clear
23
+26
+18
23 September, mon
+26
+18
Feels like
+24
756 mmHg
40%
4.1
m/s
W
23 September, Monday. day, 26°; night, 18°; clear
24
+26
+19
24 September, tue
+26
+19
Feels like
+25
756 mmHg
43%
3.2
m/s
W
24 September, Tuesday. day, 26°; night, 19°; clear
25
+27
+20
25 September, wed
+27
+20
Feels like
+26
755 mmHg
34%
3.7
m/s
W
25 September, Wednesday. day, 27°; night, 20°; clear
26
+28
+21
26 September, thu
+28
+21
Feels like
+27
754 mmHg
33%
3.5
m/s
W
26 September, Thursday. day, 28°; night, 21°; clear
27
+27
+19
27 September, fri
+27
+19
Feels like
+25
754 mmHg
36%
3.7
m/s
W
27 September, Friday. day, 27°; night, 19°; clear
28
+23
+15
28 September, sat
+23
+15
Feels like
+21
755 mmHg
46%
4.6
m/s
W
28 September, Saturday. day, 23°; night, 15°; clear
29
+22
+16
29 September, sun
+22
+16
Feels like
+22
756 mmHg
58%
3.7
m/s
W
29 September, Sunday. day, 22°; night, 16°; clear
30
+24
+17
30 September, mon
+24
+17
Feels like
+22
756 mmHg
44%
3.5
m/s
W
30 September, Monday. day, 24°; night, 17°; clear
1
+25
+17
1 October, tue
+25
+17
Feels like
+23
756 mmHg
37%
4.4
m/s
W
1 October, Tuesday. day, 25°; night, 17°; clear
2
+22
+17
2 October, wed
+22
+17
Feels like
+19
754 mmHg
43%
5.8
m/s
W
2 October, Wednesday. day, 22°; night, 17°; clear
3
+21
+16
3 October, thu
+21
+16
Feels like
+19
754 mmHg
49%
4.4
m/s
W
3 October, Thursday. day, 21°; night, 16°; clear
4
+22
+16
4 October, fri
+22
+16
Feels like
+21
755 mmHg
50%
3.7
m/s
W
4 October, Friday. day, 22°; night, 16°; clear
5
+23
+16
5 October, sat
+23
+16
Feels like
+21
757 mmHg
50%
3.7
m/s
W
5 October, Saturday. day, 23°; night, 16°; clear
Average data for 10 years
Napa September
30
sunny days
0
days with precipitation
0
cloudy days
30 sunny days; 0 days with precipitation; 0 cloudy days;
47
%
air humidity
2.7
m/s
Wind
W
3
mm of precipitation
(1% of annual average)
air humidity 47%; 3 millimeters of precipitation (1% of annual average); Wind westerly 2.7 Meters per second
Weather graphs for September
Temperature
Precipitation chance, %
Humidity, %
Wind, m/s
Pressure, mmHg
SW
SW
SW
W
W
W
W
W
W
W
W
W
W
W
W
W
W
SW
W
SW
W
W
W
W
W
W
W
W
W
W
1
Average data for 10 years
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
Daytime temperature
Night-time temperature
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