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Climate · Winthrop

Winthrop in September

Warm and mostly dry, as the days shorten.

Typical weather, averaged over 30 years

September in Winthrop is warm: highs near 74°F, lows near 46°F. Rain falls on about two days a week, more often as the month goes on, and the days shorten by 1 hour 16 minutes from the first week to the last.September in Winthrop is warm: highs near 23°C, lows near 8°C. Rain falls on about two days a week, more often as the month goes on, and the days shorten by 1 hour 16 minutes from the first week to the last.

High
74°F23°Caverage
Low
46°F8°Caverage
Wet days
2a week · 22% of days
Daylight
12h 28mon average

Is September a good time to visit Winthrop?

Yes. September is one of Winthrop's best months (June to September).

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 74°F in September, against 33°F to 85°F through the year.Highs near 23°C in September, against 1°C to 29°C through the year.

Chance of a wet day

22% of days in September, against 15% to 52% through the year.

Cloud cover

44% cover in September, against 32% to 70% through the year.

Daylight

12h 28m in September, against 8h 22m to 16h 03m 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. August85°29°low 53°low 12°1 wet day a weekRain on about one day a week.
  2. September74°23°low 46°low 8°2 wet days a weekRain on about two days a week.
  3. October59°15°low 36°low 2°2 wet days a weekRain on about two days a week.

Where Winthrop sits, in September

America/Los Angeles
this place
typical high in September 40°F4°C95°F35°C
Sunrise, mid-September
6:36 AMsets 7:16 PM
Above the sea
914 mupland
Latitude
48.5°Nnorthern hemisphere
Nearest of ours
Adams338 km south-east

The land around Winthrop, 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 Winthrop

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Winthrop. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match.Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match. 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.