10-day forecast for St. Ignatius, MT: 51° to 92°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.
92°
Best day: Wednesday, August 12
86° · 0.26 in
Worst day: Monday, August 17
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1089° / 51°0
Morning57°feels 54°
Afternoon86°feels 83°
Evening84°feels 81°
Overnight57°feels 54°
89 °
St. Ignatius, Monday, 10 August
Clear. High 89°, low 51°.
Pressure29.85 inHg
Wind5.2 mph NW
Humidity14%
Visibility6.2 mi
Dew point30°
Tue, 1191° / 59°0
Morning66°feels 63°
Afternoon89°feels 85°
Evening83°feels 81°
Overnight64°feels 61°
91 °
St. Ignatius, Tuesday, 11 August
Clear. High 91°, low 59°.
Pressure29.94 inHg
Wind4.8 mph NW
Humidity16%
Visibility6.2 mi
Dew point32°
Wed, 1292° / 60°0
Morning66°feels 64°
Afternoon88°feels 84°
Evening84°feels 81°
Overnight66°feels 64°
92 °
St. Ignatius, Wednesday, 12 August
Overcast. High 92°, low 60°.
Pressure29.85 inHg
Wind6.5 mph NW
Humidity21%
Visibility6.2 mi
Dew point36°
Thu, 1389° / 57°0.07
Morning63°feels 62°
Afternoon79°feels 78°
Evening87°feels 83°
Overnight66°feels 64°
89 °
St. Ignatius, Thursday, 13 August
Light rain. High 89°, low 57°.
Pressure29.83 inHg
Wind7.9 mph N
Humidity37%
Visibility—
Dew point47°
Fri, 1486° / 57°0.01
Morning62°feels 61°
Afternoon76°feels 75°
Evening83°feels 81°
Overnight68°feels 68°
86 °
St. Ignatius, Friday, 14 August
Light rain. High 86°, low 57°.
Pressure29.94 inHg
Wind9.9 mph SE
Humidity49%
Visibility—
Dew point51°
Sat, 1589° / 57°0.01
Morning64°feels 63°
Afternoon83°feels 82°
Evening85°feels 82°
Overnight65°feels 65°
89 °
St. Ignatius, Saturday, 15 August
Light rain. High 89°, low 57°.
Pressure30.00 inHg
Wind7.8 mph SE
Humidity32%
Visibility—
Dew point46°
Sun, 1672° / 60°0.06
Morning62°feels 61°
Afternoon67°feels 66°
Evening70°feels 70°
Overnight64°feels 63°
72 °
St. Ignatius, Sunday, 16 August
Light rain. High 72°, low 60°.
Pressure30.06 inHg
Wind6.9 mph SE
Humidity72%
Visibility—
Dew point56°
Mon, 1786° / 60°0.26
Morning66°feels 66°
Afternoon77°feels 76°
Evening72°feels 71°
Overnight61°feels 61°
86 °
St. Ignatius, Monday, 17 August
Rain. High 86°, low 60°.
Pressure29.91 inHg
Wind6.4 mph NW
Humidity49%
Visibility—
Dew point54°
Tue, 1876° / 55°0.06
Morning60°feels 59°
Afternoon72°feels 71°
Evening74°feels 72°
Overnight61°feels 59°
76 °
St. Ignatius, Tuesday, 18 August
Light rain. High 76°, low 55°.
Pressure29.94 inHg
Wind13.8 mph W
Humidity42%
Visibility—
Dew point45°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in St. Ignatius, MT around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.