World Resorts USA Spearfish Weather

Spearfish weather in December

Weather in Spearfish: December

Average day temperature: 35.3°F
Average night temperature: 27.0°F
Number of sunny days: 14 days
Day length: 8.8 - 9.1 hours
Number of rainy days: 0 days
Precipitation totals: 0.3 in.

Air temperature in December, °F

Show year:
2024
2023
2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
0
9
18
27
36
45
54
63
72
Day temperature   
Night temperature

The highest day temperature during December of 2024 was 56°F. At the same time the lowest night temperature was 14°F. Daily and nightly averages during December were 39.1°F and 30.1°F.

Sunny, partly cloudy and cloudy days
Sunny days
Partly cloudy days
Cloudy days
47%
33%
20%

Mostly all days in December are sunny but cloudy days are also possible.

Precipitation total in December, in.

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
0.2
0.4
0.7
0.9
1.1
1.3
1.5
1.7
1.3
1.0
1.3
1.0

Precipitation total value in Spearfish in December is 0.3 in. Other months of the year show relatively similar values.

Wind speed in December, mph
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
1.8
3.6
5.5
7.3
9.1
10.9
12.8
9.1
8.8
8.2
8.0
7.8
8.5
9.1
10.6
9.4
8.9
8.9
9.1
9.1
8.8
8.2
8.0
7.8
8.5
9.1
10.6
9.4
8.9
8.9

The average wind speed value in December is 9.1 mph

Average sunny hours
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
2.0
4.0
5.9
7.9
9.9
11.9
13.8
6.6
8.1
10.4
11.1
11.5
10.8
8.7
7.9
6.9
6.0
5.5
5.5
6.6
8.1
10.4
11.1
11.5
10.8
8.7
7.9
6.9
6.0
5.5

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in December is: 5.5.

Best time for vacation in Spearfish

Sunniest months:
September 23 days
August 22 days
July 21 days
Warmest months:
July 84.4 °F
August 83.0 °F
September 76.2 °F
Coldest months:
February 31.5 °F
January 31.5 °F
December 35.3 °F
Rainiest months:
May 3 days
July 2 days
August 1 day
Windiest months:
April 10.6 mph
March 9.4 mph
May 9.1 mph

Spearfish on a weather map

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24 Hours Forecast
Spearfish
Local time: 13:38
April 05, saturday
1500
48°F
SE
9 mph
1800
48°F
SE
8 mph
2100
37°F
E
2 mph
April 06, sunday
0000
30°F
NE
7 mph
0300
28°F
NE
7 mph
0600
27°F
NE
6 mph
0900
37°F
NE
5 mph
1200
50°F
SE
14 mph
Units of measurement: °C / °F