St. Charles, MI Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for St. Charles, MI.

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Current Conditions — Saint Charles, MI

SAGINAW (KMBS)

Clear

75.2 F
Humidity:47%
Wind Speed: 3.4 mph
Barometer:29.89 in
Dewpoint:53.6 F
Visibility:10.00 mi
Precip:--
Heat Index:74.7 F
Wind Chill:NA
Apr 23 2026, 02:50 PM EDT
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5-Day Forecast — Saint Charles, MI

Thursday

High 77 °F
Partly Sunny
Thursday
Night
Low 55 °F
Partly Cloudy
Friday

High 73 °F
T-storms
Friday
Night
Low 48 °F
T-storms
Saturday

High 59 °F
Mostly Cloudy
Saturday
Night
Low 41 °F
Partly Cloudy
Sunday

High 64 °F
Mostly Cloudy
Sunday
Night
Low 44 °F
Mostly Cloudy
Monday

High 68 °F
Chance of Rain Showers

Detailed Forecast — Saint Charles, MI

Thursday
Partly Sunny. High near 77°F. Wind 7 to 8 mph, with gusts as high as 16 mph.
Thursday Night
Partly Cloudy. Low around 55°F. Wind 5 to 7 mph, with gusts as high as 14 mph.
Friday
Thunderstorms. High near 73°F. Wind 7 to 12 mph, with gusts as high as 20 mph.
Friday Night
Thunderstorms. Low around 48°F. Wind 7 to 9 mph, with gusts as high as 17 mph.
Saturday
Mostly Cloudy. High near 59°F. Wind 10 to 12 mph, with gusts as high as 21 mph.
Saturday Night
Partly Cloudy. Low around 41°F. Wind 5 to 9 mph, with gusts as high as 17 mph.
Sunday
Mostly Cloudy. High near 64°F. Wind 5 to 8 mph, with gusts as high as 16 mph.
Sunday Night
Mostly Cloudy. Low around 44°F. Wind 5 to 7 mph, with gusts as high as 15 mph.
Monday
Chance of Rain Showers. High near 68°F. Wind 8 to 16 mph, with gusts as high as 28 mph.
Monday Night
Chance of Thunderstorms. Low around 53°F. Wind around 17 mph, with gusts as high as 31 mph.
Tuesday
Rain Showers Likely. High near 62°F. Wind 16 to 20 mph, with gusts as high as 32 mph.
Tuesday Night
Chance of Showers. Low around 44°F. Wind 8 to 13 mph, with gusts as high as 25 mph.
Wednesday
Slight Chance of Rain Showers. High near 60°F. Wind 8 to 13 mph, with gusts as high as 23 mph.
MI Radar
Current Radar • MI
Day 1 Outlook • April 23, 2026

Observation History — Saint Charles, MI

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
02:50 PM EDT 3.4 10.00 Clear -- 75.2 53.6 47% NA 74.7 29.89 1012.2
02:45 PM EDT 6.9 10.00 Clear -- 75.2 53.6 47% NA 74.7 29.89 1012.2
02:35 PM EDT 5.7 10.00 Clear -- 75.2 53.6 47% NA 74.7 29.90 1012.5
02:30 PM EDT 0.0 10.00 Clear -- 75.2 53.6 47% NA 74.7 29.90 1012.5
02:25 PM EDT 10.00 Clear -- 73.4 53.6 50% NA 72.9 29.90 1012.5
02:20 PM EDT 0.0 10.00 Clear -- 73.4 55.4 53% NA 72.9 29.90 1012.5
02:05 PM EDT 4.6 10.00 Clear -- 73.4 55.4 53% NA 72.9 29.91 1012.9
02:00 PM EDT 3.4 10.00 Clear -- 73.4 53.6 50% NA 72.9 29.91 1012.9
01:50 PM EDT SE 5.7 10.00 Clear -- 71.6 53.6 53% NA 70.9 29.91 1012.9
01:45 PM EDT E 5.7 10.00 Clear -- 71.6 53.6 53% NA 70.9 29.91 1012.9
01:40 PM EDT E 6.9 10.00 Clear -- 71.6 53.6 53% NA 70.9 29.91 1012.9
01:30 PM EDT E 6.9 10.00 Clear -- 71.6 53.6 53% NA 70.9 29.92 1013.2
01:25 PM EDT 5.7 10.00 Clear -- 71.6 53.6 53% NA 70.9 29.92 1013.2
01:20 PM EDT 5.7 10.00 Clear -- 71.6 53.6 53% NA 70.9 29.92 1013.2
01:15 PM EDT E 5.7 10.00 Clear -- 71.6 53.6 53% NA 70.9 29.92 1013.2
01:05 PM EDT E 6.9 10.00 Clear -- 71.6 51.8 50% NA 70.9 29.93 1013.5
01:00 PM EDT 6.9 10.00 Clear -- 69.8 51.8 53% NA NA 29.93 1013.5
12:45 PM EDT E 5.7 10.00 Clear -- 69.8 50.0 49% NA NA 29.94 1013.9
12:35 PM EDT 4.6 10.00 Clear -- 68.0 50.0 53% NA NA 29.95 1014.2
12:30 PM EDT E 8.1 10.00 Clear -- 66.2 48.2 52% NA NA 29.95 1014.2
12:15 PM EDT E 8.1 10.00 Clear -- 66.2 48.2 52% NA NA 29.96 1014.6
12:10 PM EDT E 6.9 10.00 Clear -- 66.2 48.2 52% NA NA 29.95 1014.2
12:00 PM EDT E 6.9 10.00 Clear -- 66.2 46.4 49% NA NA 29.96 1014.6
11:50 AM EDT E 4.6 10.00 Clear -- 64.4 46.4 52% NA NA 29.96 1014.6

Regional Weather Observation

SAGINAW (KMBS)

Clear
75.2 F

MIDLAND BARSTOW (KIKW)

Clear
75.2 F

ALMA (KAMN)

Clear
77.0 F

MOUNT PLEASANT (KMOP)

Clear
77.0 F

OWOSSO (KRNP)

Clear
82.9 F

SAGINAW/BROWNE (KHYX)

Clear
NULL F
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