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Climate · Sierra City

Sierra City in September

Warm and mostly dry, as the days shorten.

Typical weather, averaged over 30 years

September in Sierra City is warm: highs near 83°F, lows near 50°F. Rain falls on about one day a week, and the days shorten by 56 minutes from the first week to the last.September in Sierra City is warm: highs near 28°C, lows near 10°C. Rain falls on about one day a week, and the days shorten by 56 minutes from the first week to the last.

High
83°F28°Caverage
Low
50°F10°Caverage
Wet days
1a week · 12% of days
Daylight
12h 22mon average

Is September a good time to visit Sierra City?

Yes. September is one of Sierra City's best months (June, or September to October).

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How September sits in the year

week by week

Temperature

Highs near 83°F in September, against 48°F to 90°F through the year.Highs near 28°C in September, against 9°C to 32°C through the year.

Chance of a wet day

12% of days in September, against 9% to 43% through the year.

Cloud cover

22% cover in September, against 16% to 63% through the year.

Daylight

12h 22m in September, against 9h 25m to 14h 55m through the year.

Week by week, lightly smoothed, with September shaded. The olive line marks the best months. Hover or tap a week for its figures.

Either side

  1. August89°32°low 55°low 13°1 wet day a weekRain on about one day a week.
  2. September83°28°low 50°low 10°1 wet day a weekRain on about one day a week.
  3. October73°23°low 43°low 6°1 wet day a weekRain on about one day a week.

Where Sierra City sits, in September

America/Los Angeles
this place
typical high in September 40°F4°C95°F35°C
Sunrise, mid-September
6:42 AMsets 7:13 PM
Above the sea
1,292 mupland
Latitude
39.6°Nnorthern hemisphere
Nearest of ours
Olympic Valley54 km south-east

The land around Sierra City, shaded by its typical high in September, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in United States in September

high · low · wet days
See September on the planning mapThe whole year in Sierra City

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Sierra City. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (1,292 m) against the climate model's (1,905 m).Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (1,292 m) against the climate model's (1,905 m). Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.