North Spearfish · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
North Spearfish & neighbors — hit play
Every city on the map carries real forecast data from the same models as its city page, refreshed several times a day. The icon is the day's overall look; the number is the afternoon high.
Next 14 days at a glance
from the model forecast
Hottest day
95°
Sun, Aug 30
Coldest night
53°
Sat, Sep 5
Days with precip
2 / 14
of 14 forecast days
Nicest day
Sat, Sep 5
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
95° 67°
36% precip chance
Sat 5 – Sun 6 Sep
81° 53°
typical range
Sat 12 – Sun 13 Sep
80° 53°
typical range
Sat 19 – Sun 20 Sep
80° 53°
typical range
30 days — North Spearfish
14 forecast + 16 climatology
Sun · Today Sunny
93°67°2.1 mm⌄
Wind12 mph NE
Gusts18 mph
UV index8 – Very high
Precip chance57%
Sunrise06:07
Sunset19:48
Mon · Tomorrow Sunny
89°70°2%⌄
Wind16 mph N
Gusts27 mph
UV index8 – High
Precip chance2%
Sunrise06:09
Sunset19:46
Tuesday 25/8 Sunny
83°63°3%⌄
Wind12 mph N
Gusts21 mph
UV index7 – High
Precip chance3%
Sunrise06:10
Sunset19:45
Wednesday 26/8 Sunny
85°61°0.4 mm⌄
Wind12 mph E
Gusts21 mph
UV index8 – High
Precip chance36%
Sunrise06:11
Sunset19:43
Thursday 27/8 Partly cloudy
85°62°0.2 mm⌄
Wind17 mph SE
Gusts25 mph
UV index7 – High
Precip chance18%
Sunrise06:12
Sunset19:41
Friday 28/8 Sunny
89°60°1.3 mm⌄
Wind21 mph S
Gusts28 mph
UV index8 – Very high
Precip chance57%
Sunrise06:13
Sunset19:39
Saturday 29/8 Showers
89°67°0.9 mm⌄
Wind28 mph S
Gusts38 mph
UV index8 – Very high
Precip chance36%
Sunrise06:14
Sunset19:38
Sunday 30/8 Sunny
95°68°0.3 mm⌄
Wind15 mph E
Gusts21 mph
UV index9 – Very high
Precip chance17%
Sunrise06:16
Sunset19:36
Monday 31/8 Mostly cloudy
95°71°7%⌄
Wind16 mph SW
Gusts28 mph
UV index7 – High
Precip chance7%
Sunrise06:17
Sunset19:34
Tuesday 1/9 Sunny
82°60°1%⌄
Wind24 mph NW
Gusts35 mph
UV index7 – High
Precip chance1%
Sunrise06:18
Sunset19:32
Wednesday 2/9 Sunny
92°61°1%⌄
Wind9 mph NE
Gusts20 mph
UV index8 – Very high
Precip chance1%
Sunrise06:19
Sunset19:30
Thursday 3/9 Sunny
85°64°0%⌄
Wind15 mph NW
Gusts20 mph
UV index7 – High
Precip chance0%
Sunrise06:20
Sunset19:29
Friday 4/9 Sunny
90°59°3%⌄
Wind9 mph W
Gusts17 mph
UV index8 – Very high
Precip chance3%
Sunrise06:21
Sunset19:27
Saturday 5/9 Sunny
77°53°3%⌄
Wind15 mph E
Gusts25 mph
UV index7 – High
Precip chance3%
Sunrise06:23
Sunset19:25
Sunday 6/9 Light rain (climatological)
81°57°1.4 mm⌄
Day≈76–86°
Night≈51–62°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Partly cloudy (climatological)
84°58°20%⌄
Day≈79–90°
Night≈53–64°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
83°58°20%⌄
Day≈78–89°
Night≈53–64°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Light rain (climatological)
80°56°0.8 mm⌄
Day≈74–85°
Night≈50–61°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
75°53°20%⌄
Day≈70–81°
Night≈48–59°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
74°53°20%⌄
Day≈69–80°
Night≈47–58°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Light rain (climatological)
74°53°1.1 mm⌄
Day≈69–80°
Night≈47–58°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
80°56°20%⌄
Day≈75–86°
Night≈51–62°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
85°59°20%⌄
Day≈80–91°
Night≈54–64°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Light rain (climatological)
83°58°1.7 mm⌄
Day≈77–88°
Night≈52–63°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
84°58°20%⌄
Day≈78–89°
Night≈53–64°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
76°54°20%⌄
Day≈71–82°
Night≈48–59°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Light rain (climatological)
73°52°1.3 mm⌄
Day≈68–78°
Night≈46–57°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
75°53°20%⌄
Day≈69–80°
Night≈47–58°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
80°56°20%⌄
Day≈75–86°
Night≈51–62°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Light rain (climatological)
81°56°1.7 mm⌄
Day≈75–86°
Night≈51–62°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
How does a 30-day outlook work?
The first 14 days are a live model forecast. The back half of the month shows the typical range for those dates — useful for planning, not a literal prediction.
First 14 days: a real forecast, blended from NBM, ECMWF and GFS runs. Trust it most inside three days; by the second week treat it as a lean, not a promise.
Rest of the month: past day 14 we stop pretending to forecast and switch to the climate corridor — the range those dates have produced over three decades computed directly for North Spearfish, with mild week-to-week wiggle.
Good question for this page: "Is late August usually humid in Chicago?" Bad question: "Do I need an umbrella on the 29th?" — three weeks out no one knows, and that's the honest answer.