Lassen National Forest in september: average Weather, Temperature and Climate
Weather in Lassen National Forest in september 2025
The weather in Lassen National Forest in the month of september comes from statistical datas on the past years. You can view the weather statistics the entire month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
good weather 12.7cm UV index: 6
Weather at 6am
54°F
Clear/Sunny
83% of time
9%
4%
2%
Weather at 12pm
76°F
Clear/Sunny
84% of time
9%
5%
3%
Weather at 6pm
56°F
Clear/Sunny
82% of time
10%
6%
2%
Weather at 3am
47°F
82%
8%
4%
3%
Evolution of daily average temperature and precipitation in Lassen National Forest in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Lassen National Forest in september.
The climate of Lassen National Forest in september is good
The weather in september in Lassen National Forest is dry ; it hardly ever rains (0.7in of rainfall over 1 days).
The climate quite nice in this city the month of september. The thermometer averaged maximum of 77°F. The minimum is 54°F. Thus, the mean temperature average on this month of september in Lassen National Forest is 65°F. Note that seasonal normals in contrast with those observed in Lassen National Forest in september with a maximum record of 95°F in 2017 and a minimum record of 29°F in 2009. You can expect to have about 3 days with temperatures up to 86°F, or 10 of time.
In september in Lassen National Forest, the days on average last 12:27. The sun rises at 05:45 and sets at 18:12.
With good weather conditions, september is advisable to go there in California.
Seasonal average climate and temperature of Lassen National Forest in september
Check below seasonal norms These datas are compiled from the weather statements earlier years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 65°F | ||||
| Highest temperature | 77°F | ||||
| Lowest temperature | 54°F | ||||
| Highest record temperature | 95°F (2017) | ||||
| Lowest record temperature | 29°F (2009) | ||||
| Number of days at +86°F | 3 day(s) (10%) | ||||
| Number of days at +65°F | 27 day(s) (90%) | ||||
| Number of days at -32°F | 0 day(s) (0%) | ||||
| Wind | |||||
| Wind speed | 16km/h | ||||
| Wind temperature | 54°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 0.7in | ||||
| Number of days with rainfall | 1 day(s) (4%) | ||||
| Record daily rainfall | 0.9in (2019) | ||||
| Snowfall | 12.7cm | ||||
| Other climate data | |||||
| Humidity | 52% | ||||
| Visibility | 9.82km | ||||
| Cloud cover | 10% | ||||
| UV index | 6 | ||||
| Daily sunshine hours | 13 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:45 | ||||
| Time of sunset | 18:12 | ||||
| Length of day | 12:27 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last september?
Here is the day by day recorded weather in Lassen National Forest in september 2024:
56°F to 81°F
49°F to 76°F
49°F to 85°F
52°F to 86°F
56°F to 90°F
59°F to 86°F
56°F to 81°F
50°F to 81°F
49°F to 79°F
50°F to 77°F
43°F to 67°F
38°F to 72°F
43°F to 79°F
47°F to 77°F
43°F to 65°F
41°F to 54°F
43°F to 49°F
45°F to 63°F
50°F to 72°F
56°F to 77°F
54°F to 76°F
52°F to 77°F
56°F to 77°F
58°F to 79°F
59°F to 72°F
52°F to 76°F
58°F to 81°F
59°F to 79°F
56°F to 81°F
52°F to 74°F
Map: other cities in California in september
Cities near Lassen National Forest:
| Lassen Volcanic National Park in september | good weather |
| Plumas National Forest in september | good weather |
| Modoc National Forest in september | perfect weather |
| Chico in september | perfect weather |
| Redding in september | perfect weather |
| Shasta-Trinity National Forest in september | tolerable weather |
| Lava Beds National Monument in september | good weather |
| Lake Tahoe in september | good weather |
| Klamath National Forest in september | good weather |
| Sacramento in september | perfect weather |
| Six Rivers National Forest in september | good weather |
| Humboldt Redwoods State Park in september | perfect weather |
Click over cities on the map for information about the weather in september.
Lassen National Forest
perfect weather
good
tolerable
bad
very bad
Weather data for Lassen National Forest in september:
Weather data for Lassen National Forest for september are derived from an average of the weather forecast since 2009 in Lassen National Forest. There is a margin of error and these forecasts are to be considered as general information only. The weather in Lassen National Forest can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Lassen National Forest.