Mason County, MI Weather Forecast
County weather hub
Mostly Cloudy
Compare major city weather across Mason County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly cloudy. Low around 43, with temperatures rising to around 46 overnight. East northeast wind around 7 mph.
County Weather Overview
This county weather page brings together forecast coverage for Mason County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 1 of 2 mapped cities in Mason County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Oct 15 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 3:28 AM EDT
- Forecast office
- GRR
- Source
- NOAA / NWS
Daily Outlook
This Week in Mason County
Wednesday looks like the warmest upcoming period in Mason County at 65 degrees F.
Friday Night is the coolest period ahead with temperatures near 39 degrees F.
The strongest winds are forecast for Friday at about 15 to 28 mph NNW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 3:28 AM 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
Rain showers after 2pm. Mostly cloudy, with a high near 59. East southeast wind around 8 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
Rain showers. Cloudy. Low around 44, with temperatures rising to around 49 overnight. Northeast wind 5 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Rain showers. Mostly cloudy, with a high near 55. North northwest wind 15 to 28 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Rain showers before 2am. Mostly cloudy, with a low around 39. North wind 9 to 28 mph, with gusts as high as 45 mph. Chance of precipitation is 80%.
Sunny, with a high near 55.
Clear, with a low around 44.
Sunny, with a high near 59.
Mostly clear, with a low around 47.
Mostly sunny, with a high near 61.
Partly cloudy, with a low around 45.
Sunny, with a high near 63.
Mostly clear, with a low around 46.
Mostly sunny, with a high near 65.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Oct 15
|
Mostly Cloudy
|
43°F |
7 mph
ENE
|
|
Thursday
Oct 15
|
Mostly Cloudy then Rain Showers
|
59°F |
8 mph
ESE
|
|
Thursday Night
Oct 15
|
Rain Showers
|
44°F |
5 to 13 mph
NE
|
|
Friday
Oct 16
|
Rain Showers
|
55°F |
15 to 28 mph
NNW
|
|
Friday Night
Oct 16
|
Rain Showers
|
39°F |
9 to 28 mph
N
|
|
Saturday
Oct 17
|
Sunny
|
55°F |
6 to 13 mph
WNW
|
|
Saturday Night
Oct 17
|
Clear
|
44°F |
13 to 16 mph
SW
|
|
Sunday
Oct 18
|
Sunny
|
59°F |
16 to 21 mph
SW
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
47°F |
12 to 21 mph
SW
|
|
Monday
Oct 19
|
Mostly Sunny
|
61°F |
12 mph
SW
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
45°F |
3 to 9 mph
SSW
|
|
Tuesday
Oct 20
|
Sunny
|
63°F |
3 to 7 mph
S
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
46°F |
7 mph
S
|
|
Wednesday
Oct 21
|
Mostly Sunny
|
65°F |
7 to 12 mph
S
|
Major City Forecasts
Live forecast snapshots for major cities across Mason County.
Coverage
Forecast coverage currently spans 1 of 2 mapped cities in Mason County.
Largest mapped city population in this region: 8,096.
