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
Castle Rock in September sees high temperatures, with highs around 23°C (73°F) and overnight lows of 9°C (48°F). Overall excellent conditions make it one of the better months to visit.
Rainfall in Castle Rock in September
Historically, September sees about 10 days of rain, with a monthly average of 53 mm (2.1 in). The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Castle Rock in September
Castle Rock has excellent weather in September, with days reaching 23°C (73°F) and nights cooling to 9°C (48°F). September is known for being in the summer season. This kind of day-to-night contrast is typical for this time of year. With overnight lows of 9°C (48°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Castle Rock in September
The month enjoys around 236 hours of sunshine, creating mostly sunny days with good weather conditions.If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.
Castle Rock Temperature in September
Min Temperature
9°C (48°F)
Max Temperature
23°C (73°F)
Chance of Rain
32%
Precipitation
53 mm (2.1 in)
Rainy days
10 days
Sunshine
236 hours *
Percentage Sunshine
*
* Data from: Astoria, the United States of America (71 KM, 44 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
For Castle Rock in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
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 -
Camping4/10 -
Outdoor sports10/10
Castle Rock 3-Day Forecast
More climate data for Castle Rock
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.
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Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
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