See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
12°
Overcast
Feels Like: 14°
Min: 12°
Max: 29°
The next few hours will be overcast, with today reaching 29°C and dropping to 16°C. The coming days will be mostly clear throughout the day.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:47
Sunrise
18:59
Sunset
Moon
Waxing Crescent
12:40
Moonrise
21:11
Moonset
Daily Forecast
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Thursday
Friday
Saturday
Sunday
Monday
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Friday
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Weather in Castle Rock today, September 16, 2026
Castle Rock looks cloudy on September 16, 2026, with grey skies for much of the day. Sunshine stays limited, so the overall tone is muted from the morning onward. Cloud leads the morning, peaking close to 100% near 04:00. Sunshine has little room until later in the day.
Expect highs of 29°C and cooler readings close to 12°C. The air stays humid, with relative humidity between 21% and 88% and the peak around 20:00. Winds stay light, near 12.2 km/h by 16:00, so the day feels still more than breezy.
The afternoon keeps an overcast feel, as cloud reaches about 100% around 12:00. Outdoor plans may still want a flexible backup. Expect visibility near 15.0 km, with poorer spells close to 4.6 km. Expect sunrise at 06:47, sunset at 18:59, and 12 hours 11 minutes of sunlight today overall.
The practical takeaway for Castle Rock on September 16, 2026 is a cloudy day that stays usable, just not particularly bright, around 29°C.
Frequently asked questions about weather in Castle Rock
How warm does it get in Castle Rock?
The warmest month in Castle Rock is July, with average high temperatures of 29°C. The average temperature during this period is around 21°C.
How cold does it get in Castle Rock?
The coldest month in Castle Rock is January, with average low temperatures of -11°C. The average temperature during this period is around -4°C.
What is the wettest time of year in Castle Rock?
The wettest month in Castle Rock is May, with an average of 89mm of precipitation.
What is the driest time of year in Castle Rock?
The driest month in Castle Rock is December, with an average of 14mm of precipitation.
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