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As of 21:10 MDT

Weather in Castle Rock, SD

34°Current weather

Castle Rock, Monday, 26 October, 21:10

Overcast. Feels like 25°. High 39°, low 34°.

Pressure30.15 inHg
Wind14.3 mph SE
Humidity93%
Visibility6.2 mi
Dew point33°
Tue, 2757° / 31°0Clear
57 °Clear

Castle Rock, Tuesday, 27 October

Clear. High 57°, low 31°.

Pressure29.85 inHg
Wind7.6 mph W
Humidity51%
Visibility6.2 mi
Dew point36°
Wed, 2859° / 39°0Clear
59 °Clear

Castle Rock, Wednesday, 28 October

Clear. High 59°, low 39°.

Pressure29.94 inHg
Wind11.5 mph NW
Humidity38%
Visibility6.2 mi
Dew point28°
Thu, 2961° / 36°0Clear
61 °Clear

Castle Rock, Thursday, 29 October

Clear. High 61°, low 36°.

Pressure30.06 inHg
Wind4.8 mph W
Humidity40%
Visibility6.2 mi
Dew point31°
Fri, 3055° / 36°0Light rain
55 °Light rain

Castle Rock, Friday, 30 October

Light rain. High 55°, low 36°.

Pressure30.15 inHg
Wind13.3 mph E
Humidity65%
Visibility6.2 mi
Dew point38°
Sat, 3163° / 51°0.01Light rain
63 °Light rain

Castle Rock, Saturday, 31 October

Light rain. High 63°, low 51°.

Pressure29.91 inHg
Wind11.9 mph SE
Humidity82%
Visibility—
Dew point52°
Sun, 0158° / 43°0.13Light rain
58 °Light rain

Castle Rock, Sunday, 1 November

Light rain. High 58°, low 43°.

Pressure29.83 inHg
Wind18.4 mph NW
Humidity78%
Visibility—
Dew point46°
Mon, 0244° / 32°1.5Snow
44 °Snow

Castle Rock, Monday, 2 November

Snow. High 44°, low 32°.

Pressure30.00 inHg
Wind21.7 mph W
Humidity98%
Visibility—
Dew point33°
Tue, 0347° / 38°0.05Light rain
47 °Light rain

Castle Rock, Tuesday, 3 November

Light rain. High 47°, low 38°.

Pressure30.21 inHg
Wind20.5 mph N
Humidity77%
Visibility—
Dew point37°
Wed, 0441° / 33°0Overcast
41 °Overcast

Castle Rock, Wednesday, 4 November

Overcast. High 41°, low 33°.

Pressure30.24 inHg
Wind20.7 mph NW
Humidity89%
Visibility—
Dew point38°
Thu, 0541° / 30°0Clear
41 °Clear

Castle Rock, Thursday, 5 November

Clear. High 41°, low 30°.

Pressure30.21 inHg
Wind11.1 mph NW
Humidity42%
Visibility—
Dew point16°
Fri, 0639° / 28°0Overcast
39 °Overcast

Castle Rock, Friday, 6 November

Overcast. High 39°, low 28°.

Pressure30.18 inHg
Wind16.9 mph SE
Humidity42%
Visibility—
Dew point14°
Sat, 0745° / 31°0Overcast
45 °Overcast

Castle Rock, Saturday, 7 November

Overcast. High 45°, low 31°.

Pressure29.83 inHg
Wind14 mph SE
Humidity60%
Visibility—
Dew point27°
Sun, 0852° / 40°0Overcast
52 °Overcast

Castle Rock, Sunday, 8 November

Overcast. High 52°, low 40°.

Pressure29.62 inHg
Wind14.9 mph NW
Humidity68%
Visibility—
Dew point41°
Mon, 0954° / 44°0Overcast
54 °Overcast

Castle Rock, Monday, 9 November

Overcast. High 54°, low 44°.

Pressure29.83 inHg
Wind23.6 mph NW
Humidity47%
Visibility—
Dew point31°
Tue, 1045° / 34°0Light snow
45 °Light snow

Castle Rock, Tuesday, 10 November

Light snow. High 45°, low 34°.

Pressure30.12 inHg
Wind21.7 mph NW
Humidity61%
Visibility—
Dew point26°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Castle Rock, SD are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Castle Rock, SD since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.