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Clackamas (OR) Weather and Climate: A Comprehensive Guide

The temperature in Clackamas can vary quite a bit throughout the year. Temperatures can be warm during the warmest months, and cold during the cooler months. It also experiences much rain/snowfall throughout the year. Now, let’s break down all the climate details for a clearer picture.

Average maximum day and minimum night temperature

Visitors to Clackamas can expect significant temperature changes throughout the year. Average daytime temperatures reach a comfortable 28°C in July. In December, the coolest month of the year, temperatures drop to a chilly 8°C.

At night, you can expect cooler temperatures, with averages dropping to around 2°C during this month. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Clackamas is known for its substantial rain/snowfall, with annual precipitation reaching 1157 mm. Clackamas can be quite wet during December, receiving approximately 194 mm of precipitation over 20 rainy days.

In contrast July, experiences much drier conditions, with 12 mm of rainfall, spread across 4 rainy days. For more details, please visit our Clackamas Precipitation page.

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

Sunshine over the year

Clackamas can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 11.1 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 2.1 hours of sunlight per day. Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Portland, the United States of America (21 KM, 13 Miles).

Daily hours of sunshine

Data from: Portland, the United States of America (21 KM, 13 Miles).

Forecast for Clackamas (OR)

Sat   Dec 21
13°C | 6°C
NE 7 m/s
4.3 mm
broken clouds and rain

broken clouds and rain

Sun   Dec 22
10°C | 7°C
E 10 m/s
12 mm
overcast and heavy rain

overcast and heavy rain

Mon   Dec 23
12°C | 7°C
NE 10 m/s
11 mm
broken clouds and rain

broken clouds and rain

The best time of year to visit Clackamas 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:
  • Which months have the greatest rainfall in Clackamas?
    Most rainfall (rainy season) is seen in January, November and December.
  • Does Clackamas have a dry season?
    Yes, the months of July and August are very dry.
  • Which is the warmest month in Clackamas?
    July has an average maximum temperature of 28°C and is the warmest month of the year.
  • Which is the coldest month in Clackamas?
    The coldest month is December with an average maximum temperature of 8°C.
  • Which is the wettest month in Clackamas?
    December tops the wettest month list with 194 mm of rainfall.
  • Which is the driest month in Clackamas?
    July is the driest month with 12 mm of precipitation.
  • Which is the sunniest month in Clackamas?
    July is the sunniest month with an average of 332 hours of sunshine.

  • 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.