Climate in Hermiston (Oregon), United States of America

The graphs below show the monthly weather averages over the year.

Average day and night temperature

The mean minimum and maximum temperatures over the year.

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

The average number of days each month with rain, snow, hail etc.

Tue Apr 30

15°C | 2°C

22 km/h

0.6 mm

broken clouds and chance of slight rain

hourly forecast

Wed May 01

18°C | 3°C

22 km/h

almost clear and no rain

hourly forecast

Thu May 02

18°C | 3°C

11 km/h

partly cloudy and no rain

hourly forecast

Other facts from our historical weather data:

When is summer in Hermiston?
The hottest season / summer takes place in June, July, August and September.

Does Hermiston have a dry season?
Yes, the months of February, April, June, July, August and September are very dry.

Which is the warmest month in Hermiston?
July has an average maximum temperature of 33°C and is the warmest month of the year.

Which is the coldest month in Hermiston?
The coldest month is December with an average maximum temperature of 5°C.

Which is the wettest month in Hermiston?
December tops the wettest month list with 35 mm of rainfall.

Which is the driest month in Hermiston?
July is the driest month with 3 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.