Lewis and Clark County area, State of Montana, United States weather next 30 days

Lewis and Clark County weather next 30 days

Detailed forecasts cover the next 15 days; later days will be added when available.

Fri 16/100° / 16°Overcast0%7.9 km/hOvercast · 7.9 km/h
Rainfall
0 mm
Feels like
-4° / 14°
Gusts
8.6 km/h
Wind direction
West
Peak UV
4.3
Sat 17/103° / 24°Overcast0%19.2 km/hOvercast · 19.2 km/h
Rainfall
0 mm
Feels like
0° / 19°
Gusts
42.5 km/h
Wind direction
Southwest
Peak UV
3.9
Sun 18/106° / 16°Overcast0%11.8 km/hOvercast · 11.8 km/h
Rainfall
0 mm
Feels like
3° / 13°
Gusts
14.4 km/h
Wind direction
Southwest
Peak UV
4
Mon 19/105° / 21°Overcast1%9.5 km/hOvercast · 9.5 km/h
Rainfall
0 mm
Feels like
2° / 17°
Gusts
14.8 km/h
Wind direction
South
Peak UV
4
Tue 20/108° / 19°Overcast16%8.4 km/hOvercast · 8.4 km/h
Rainfall
0 mm
Feels like
4° / 16°
Gusts
14.8 km/h
Wind direction
West
Peak UV
3.3
Wed 21/107° / 17°Overcast23%10.2 km/hOvercast · 10.2 km/h
Rainfall
0 mm
Feels like
4° / 14°
Gusts
16.6 km/h
Wind direction
Southwest
Peak UV
3.6
Thu 22/106° / 16°Showers27%13 km/hShowers · 13 km/h
Rainfall
8.4 mm
Feels like
5° / 13°
Gusts
16.9 km/h
Wind direction
Southwest
Peak UV
2.6
Fri 23/101° / 7°Showers27%21.6 km/hShowers · 21.6 km/h
Rainfall
4.8 mm
Feels like
-3° / 5°
Gusts
41.4 km/h
Wind direction
West
Peak UV
2.5
Sat 24/10-2° / 7°Overcast18%13.2 km/hOvercast · 13.2 km/h
Rainfall
0 mm
Feels like
-7° / 3°
Gusts
37.4 km/h
Wind direction
Southwest
Peak UV
3.4
Sun 25/10-2° / 12°Overcast19%12.1 km/hOvercast · 12.1 km/h
Rainfall
0 mm
Feels like
-6° / 8°
Gusts
12.6 km/h
Wind direction
Southwest
Peak UV
3
Mon 26/10-1° / 5°Light rain20%7.6 km/hLight rain · 7.6 km/h
Rainfall
7.2 mm
Feels like
-5° / 2°
Gusts
23 km/h
Wind direction
Southwest
Peak UV
1.7
Tue 27/10-3° / 9°Overcast11%11.8 km/hOvercast · 11.8 km/h
Rainfall
0 mm
Feels like
-7° / 6°
Gusts
22 km/h
Wind direction
Southwest
Peak UV
3.4
Wed 28/10-1° / 12°Light drizzle13%24.4 km/hLight drizzle · 24.4 km/h
Rainfall
1.2 mm
Feels like
-5° / 9°
Gusts
59 km/h
Wind direction
Southwest
Peak UV
2.6
Thu 29/10-1° / 9°Overcast6%11.3 km/hOvercast · 11.3 km/h
Rainfall
0 mm
Feels like
-5° / 6°
Gusts
26.6 km/h
Wind direction
South
Peak UV
2.8
Fri 30/103° / 14°Light drizzle16%24.3 km/hLight drizzle · 24.3 km/h
Rainfall
0.3 mm
Feels like
-2° / 10°
Gusts
13.3 km/h
Wind direction
Southwest
Peak UV
2.7

Lewis and Clark County temperature over the next 15 days

High
Low

Show data table

Temperature by day
Day	High	Low
16/10	15.9°C	-0.1°C
17/10	23.6°C	3.1°C
18/10	16.1°C	6°C
19/10	20.7°C	5.2°C
20/10	18.9°C	7.7°C
21/10	17.3°C	6.9°C
22/10	16.1°C	6.3°C
23/10	7.3°C	0.8°C
24/10	7.2°C	-2.2°C
25/10	11.5°C	-1.8°C
26/10	4.8°C	-1.5°C
27/10	9.2°C	-3.3°C
28/10	11.7°C	-0.8°C
29/10	9.4°C	-0.9°C
30/10	13.5°C	2.5°C

Lewis and Clark County chance of rain over the next 15 days

Bars show chance of rain (%); rainfall (mm) is in the data table

Show data table

Chance of rain and rainfall by day
Day	Chance of rain	Rainfall
16/10	0%	0 mm
17/10	0%	0 mm
18/10	0%	0 mm
19/10	1%	0 mm
20/10	16%	0 mm
21/10	23%	0 mm
22/10	27%	8.4 mm
23/10	27%	4.8 mm
24/10	18%	0 mm
25/10	19%	0 mm
26/10	20%	7.2 mm
27/10	11%	0 mm
28/10	13%	1.2 mm
29/10	6%	0 mm
30/10	16%	0.3 mm

Environment

AQI details →

Air quality

29Good

Ultraviolet (UV)

0.45Low

Wind now

9km/h

Dew point

1°RH 56%

Sunrise & sunset

10h 55m of daylight

Noon 13:13

Rise: 07:45Dawn 07:15

Set: 18:40Dusk 19:11

Windy wind map & radar (Lewis and Clark County)

Detailed radar →

Weather in areas of Lewis and Clark County

Helena

Data source: Weather data by Open-Meteo.com (CC BY 4.0)