Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
Castle Rock Weather in September
September in Castle Rock brings high temperatures, with highs of 25°C (77°F) and nights dropping to 8°C (46°F). With excellent weather conditions overall, it's a good time to visit.
Rainfall in Castle Rock in September
Historically, approximately 7 days this month are expected to have rain, averaging 43 mm (1.7 in). A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.
Temperature in Castle Rock in September
September tends to be one of the excellent months in Castle Rock, with 25°C (77°F) in the afternoon and 8°C (46°F) overnight. Overall, the month follows a fairly predictable daily temperature pattern. Nights drop to 8°C (46°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in Castle Rock in September
The days are predominantly sunny, with an estimated total of around 270 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Castle Rock.
Castle Rock Temperature in September
Min Temperature
8°C (46°F)
Max Temperature
25°C (77°F)
Chance of Rain
24%
Precipitation
43 mm (1.7 in)
Rainy days
7 days
Humidity
50% *
Sunshine
270 hours *
Percentage Sunshine
73% *
* Data from: Denver, the United States of America (42 KM, 26 Miles).
Castle Rock Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Castle Rock - and find the best time to visit.
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Castle Rock in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
What To Do in Castle Rock in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming10/10 -
Cycling10/10 -
Walking10/10 -
Barbeque9/10 -
Camping5/10 -
Outdoor sports10/10
Castle Rock 3-Day Forecast
More climate data for Castle Rock
Temperature Rainfall Sunshine Humidity
See the full Castle Rock climate overview or explore weather in the United States of America.
Popular in September
Where to go in September - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
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