Saint Johns, MI Weather Forecast
Local 7-day forecast
Mostly Sunny then Areas Of Smoke
Track current conditions, temperature changes, wind, and the full daily outlook for Saint Johns, MI in one place.
Areas of smoke after 5pm. Mostly sunny, with a high near 97. Heat index values as high as 102. West northwest wind 6 to 9 mph, with gusts as high as 20 mph.
Local Weather Overview
This forecast page for Saint Johns, MI 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: Jul 14, 2026 8:38 PM EDT.
The active forecast window currently covers Jul 15 to Jul 21, 2026 for Saint Johns, MI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 15 to Jul 21, 2026
- Latest sync
- Jul 14, 2026 8:38 PM EDT
- Forecast office
- GRR
- Source
- NOAA / NWS
Daily Outlook
This Week in Saint Johns
Wednesday looks like the warmest upcoming period in Saint Johns at 97 degrees F.
Saturday Night is the coolest period ahead with temperatures near 64 degrees F.
The strongest winds are forecast for Tuesday at about 10 to 17 mph WNW.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 14, 2026 8:38 PM EDT
- Coverage
- 7 days
- Time zone
- America/Detroit
- Forecast office
- GRR
- Radar station
- KGRR
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Smoke. Partly cloudy, with a low around 66. North northwest wind 2 to 9 mph, with gusts as high as 20 mph.
Smoke. Sunny, with a high near 91. North northeast wind around 5 mph.
Smoke before 8pm. Mostly clear, with a low around 66. East northeast wind around 5 mph.
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 68.
A slight chance of showers and thunderstorms before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 89.
A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Partly cloudy, with a low around 64.
Mostly sunny, with a high near 85.
A slight chance of showers and thunderstorms between 8pm and 2am. Partly cloudy, with a low around 64.
A slight chance of rain showers between 8am and 2pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 86.
A chance of showers and thunderstorms. Partly cloudy, with a low around 64.
A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 81.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Jul 15
|
Mostly Sunny then Areas Of Smoke
|
97°F |
6 to 9 mph
WNW
|
|
Wednesday Night
Jul 15
|
Smoke
|
66°F |
2 to 9 mph
NNW
|
|
Thursday
Jul 16
|
Smoke
|
91°F |
5 mph
NNE
|
|
Thursday Night
Jul 16
|
Smoke then Mostly Clear
|
66°F |
5 mph
ENE
|
|
Friday
Jul 17
|
Mostly Sunny then Chance Showers And Thunderstorms
|
89°F |
7 mph
SSE
|
|
Friday Night
Jul 17
|
Chance Showers And Thunderstorms
|
68°F |
7 mph
SW
|
|
Saturday
Jul 18
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
89°F |
7 to 16 mph
WSW
|
|
Saturday Night
Jul 18
|
Chance Showers And Thunderstorms
|
64°F |
7 to 15 mph
NW
|
|
Sunday
Jul 19
|
Mostly Sunny
|
85°F |
8 mph
N
|
|
Sunday Night
Jul 19
|
Slight Chance Showers And Thunderstorms
|
64°F |
6 mph
SW
|
|
Monday
Jul 20
|
Chance Showers And Thunderstorms
|
86°F |
6 to 15 mph
SW
|
|
Monday Night
Jul 20
|
Chance Showers And Thunderstorms
|
64°F |
10 to 14 mph
WSW
|
|
Tuesday
Jul 21
|
Chance Rain Showers
|
81°F |
10 to 17 mph
WNW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Saint Johns.
