Saint Ignatius, MT Weather Forecast

Local 7-day forecast

57°
F

Mostly Sunny

Track current conditions, temperature changes, wind, and the full daily outlook for Saint Ignatius, MT in one place.

Saturday, April 18, 2026
Wind: 5 mph S
Saturday

Mostly sunny, with a high near 57.

Local 7-day forecast

Local Weather Overview

This forecast page for Saint Ignatius, MT is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 14, 2026 4:38 AM MDT.

The active forecast window currently covers Apr 18 to Apr 20, 2026 for Saint Ignatius, MT.

Page Snapshot

Page focus
city weather
Forecast window
Apr 18 to Apr 20, 2026
Latest sync
Apr 14, 2026 4:38 AM MDT
Forecast office
MSO
Source
NOAA / NWS
Next High
57°F
Saturday
Next Low
34°F
Saturday Night
Rain Outlook
2
Periods mentioning precipitation
Windiest
6 to 9 mph
Monday

Daily Outlook

Today
Apr 18
Mostly Sunny
57 °F
/ 34°F
Wind 5 mph
Sun
Apr 19
Mostly Sunny
65 °F
/ 41°F
Wind 6 mph
Mon
Apr 20
Chance Light Rain
64 °F
Wind 6 to 9 mph

This Week in Saint Ignatius

Sunday looks like the warmest upcoming period in Saint Ignatius at 65 degrees F.

Saturday Night is the coolest period ahead with temperatures near 34 degrees F.

The strongest winds are forecast for Monday at about 6 to 9 mph SW.

Precipitation is mentioned in 2 upcoming forecast periods.

Forecast Details

Last updated
Apr 14, 2026 4:38 AM MDT
Coverage
3 days
Time zone
America/Denver
Forecast office
MSO
Radar station
KMSX

Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.

Open NOAA source

Extended Forecast

Saturday Night
Apr 18
34°F
Partly Cloudy
6 mph SSE

Partly cloudy, with a low around 34.

Sunday
Apr 19
65°F
Mostly Sunny
6 mph S

Mostly sunny, with a high near 65.

Sunday Night
Apr 19
41°F
Mostly Cloudy then Slight Chance Light Rain
6 mph SE

A slight chance of rain after midnight. Mostly cloudy, with a low around 41.

Monday
Apr 20
64°F
Chance Light Rain
6 to 9 mph SW

A chance of rain. Partly sunny, with a high near 64.

Detailed Forecast

Period Conditions Temp Wind
Saturday
Apr 18
Mostly Sunny
57°F
5 mph
S
Saturday Night
Apr 18
Partly Cloudy
34°F
6 mph
SSE
Sunday
Apr 19
Mostly Sunny
65°F
6 mph
S
Sunday Night
Apr 19
Mostly Cloudy then Slight Chance Light Rain
41°F
6 mph
SE
Monday
Apr 20
Chance Light Rain
64°F
6 to 9 mph
SW
Weather data provided by the National Weather Service (NOAA). Forecast pages update automatically as new periods are synced for each supported U.S. location.