Weather in Boise: September
Average day temperature: | 77.6°F | |
Average night temperature: | 60.2°F | |
Number of sunny days: | 23 days | |
Day length: | 11.8 - 13.2 hours | |
Number of rainy days: | 1 day | |
Precipitation totals: | 0.4 in. | |
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14 days
forecast
forecast
Boise |
weather in
October
October
Boise |
Air temperature in September, °F
Show year:
2023
2022
2021
The highest day temperature during September of 2023 was 86°F. At the same time the lowest night temperature was 42°F. Day and night temperature averages during September were 72.9°F and 57.7°F.
Sunny, partly cloudy and cloudy days
Mostly all days in September are sunny but cloudy days are also possible.
Precipitation total in September, in.
Precipitation total value in Boise in September is 0.4 in. Other months of the year show relatively similar values.
Wind speed in September, mph
The average wind speed value in September is 5.8 mph It makes September one of the least windy months of the year.
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 10.1.
Best time for vacation in Boise
Boise on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Boise
Local time: 19:48
May 18, saturday
2100
59°F
W
2 mph
2 mph
May 19, sunday
0000
54°F
E
12 mph
12 mph
0300
45°F
SE
11 mph
11 mph
0600
41°F
SE
8 mph
8 mph
0900
46°F
SE
11 mph
11 mph
1200
48°F
SE
13 mph
13 mph
1500
54°F
SE
13 mph
13 mph
1800
54°F
SE
11 mph
11 mph