Castle Rock Weather in January

Castle Rock in January averages 8°C (46°F) during the day and 1°C (34°F) at night. This is the wettest month of the year, and part of the winter season.

Rainfall in Castle Rock in January

Castle Rock is in the rainy season in January, with rain on around 21 days and an average of 207 mm (8.1 in). Rainy season showers tend to be fairly substantial. A good rain jacket or umbrella is worth having with you most days.

Temperature in Castle Rock in January

Expect highs of 8°C (46°F) in Castle Rock in January, with nights dropping to around 1°C (34°F). The winter season is characteristic of January. The days stay cool from start to finish. Layering up well will make outdoor time much more comfortable. With overnight lows of 1°C (34°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Castle Rock in January

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.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July, August and September typically offer the best weather for Castle Rock.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Castle Rock's climate page.

Castle Rock Temperature in January

Min Temperature 1°C (34°F)  

Max Temperature 8°C (46°F)  

Chance of Rain 68%  

Precipitation 207 mm (8.1 in)  

Rainy days 21 days  

Sunshine 84 hours *  

Percentage Sunshine *  

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

What to Wear in Castle Rock in January

Dress warmly and in layers for your trip to Castle Rock in January. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. It's going to pour! Pack a good poncho and prepare for very wet conditions. With limited sunshine expected, sunglasses aren't a priority for packing.

What To Do in Castle Rock in January

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

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Castle Rock's climate page.

More climate data for Castle Rock

Temperature Rainfall Sunshine

See the full Castle Rock climate overview or explore weather in the United States of America.