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Winthrop (WA) Weather and Climate: A Comprehensive Guide

The temperature in Winthrop can vary greatly throughout the year. The temperatures shift from very warm to very cold. It's weather is marked by below-average rain/snowfall. Now, let’s explore all the climate details to give you a full picture.

Average maximum day and minimum night temperature

Depending on the time of the year, temperatures range from very warm to very cold in Winthrop. Typically, average maximum daytime temperatures range from a very warm 30°C in July to a very cold -1°C in the coolest month, December.

Nights are cooler, with lows often dropping to around -9°C during the colder months. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Winthrop has a relatively dry climate with low precipitation, averaging 391 mm of rain/snowfall annually. The climate in Winthrop shows significant variation throughout the year. Expect moderate snowfall in December, with an average of 69 mm of precipitation over 15 snowy days.

In contrast, August offers drier and sunnier days, with around 13 mm of rainfall over 4 rainy days. For more details, please visit our Winthrop Precipitation page.

The mean monthly precipitation over the year, including rain, hail and snow

Forecast for Winthrop (WA)

Fri   Dec 27
6°C | -6°C
SE 1 m/s
6.1 mm
overcast and slight snow

overcast and slight snow

Sat   Dec 28
8°C | 2°C
N 1 m/s
9.8 mm
broken clouds and sleet

broken clouds and sleet

Sun   Dec 29
6°C | -2°C
N 1 m/s
3.5 mm
overcast and snow

overcast and snow

The best time of year to visit Winthrop in the United States of America

During the months of May, June and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • When is summer in Winthrop?
    The hottest season / summer takes place in June, July, August and September.
  • Does Winthrop have a dry season?
    Yes, the months of April, July, August and September are very dry.
  • Which is the warmest month in Winthrop?
    July has an average maximum temperature of 30°C and is the warmest month of the year.
  • Which is the coldest month in Winthrop?
    The coldest month is December with an average maximum temperature of -1°C.
  • Which is the wettest month in Winthrop?
    December tops the wettest month list with 69 mm of rainfall.
  • Which is the driest month in Winthrop?
    August is the driest month with 13 mm of precipitation.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.