Castle Rock weather in January (Washington State, United States of America)

How does the January weather in Castle Rock compare to other months? Find all the essential weather information for this month in our guide.

Temperatures

In January, Castle Rock tends to experience low temperatures and heavy rainfall. During January, the winter season is in full swing. Daytime temperatures hover around 8°C, while nights can cool down to about 1°C.

Precipitation

Castle Rock in January usually receives heavy rainfall, averaging around 207 mm for the month. Prepare for intense rain this month, as it marks the peak rainfall period. Having a poncho will keep you dry through the downpours. Historically, approximately 21 days this month are expected to have rain.

Average sunshine

This month is characterized by fewer sunny days, with about 84 hours of sunshine. It's great for those who appreciate cooler, less sunny days.

If you prefer dry days with pleasant temperatures, January may not be the ideal month to visit Castle Rock. June, July, August and September typically offer the most optimal weather. In contrast, January, February, March, November and December tend to have less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Castle Rock climate page with graphs.

 

Castle Rock, monthly averages in January

Min Temperature 1°C  

Max Temperature 8°C  

Chance of Rain 68%  

Precipitation 207 mm  

Rainy days 21 days  

Sunshine 84 hours *  

Percentage Sunshine *  

Data from: Astoria, the United States of America (71 KM, 44 Miles).

Where to go in the United States of America in January

Find out more about the weather in the United States of America and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

Wear a base layer in cold weather; this is the #1 thing you can do to increase your overall body temperature.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

4/10

Cycling

4/10

Walking

4/10

Camping

3/10

Outdoor sports

4/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Castle Rock.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.