Grass Lake, MI Weather Forecast | 5 Day
Updated: Fri Sep 11th 2026 8:45 AM EDT
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Sunny
Fri 9-11-26
Sunny with a high of 77°F and a low of 53°F. There's a very small chance of rainfall, only about 6%. Winds will be light at 8mph and gusts of 14.6mph at 8 PM. The humidity will be on the higher side, averaging about 71%, the maximum being 94% at 11 PM and 37% being its lowest at 4 PM. Barometric pressure is its highest of 30.06inHg at 10 AM, a lowest point of 29.96inHg at 6 PM with an avg 30inHg.
- HI: 77°F
- LO: 53°F
- Rainfall: 6%
- Snowfall: 0%
- Wind
7.8 mph - Humidity
71% avg. - UV Index
6.5 - Air QualityGood
- Sunrise
07:12 AM - Sunset
07:53 PM - Moonrise
07:33 AM - Moonset
07:56 PM - Moon Phase
New Moon
Mist
Weather Tomorrow, Sat 9-12-26
Mist with a high of 80°F and a low of 62°F. There might be light rainfall having a 14% chance. Wind will be moderate, blowing around 11mph on average and gusts of 20.4mph at 8 PM. The humidity will be on the higher side, averaging about 79%, the maximum being 97% at 3 AM and 53% being its lowest at 4 PM. Barometric pressure is its highest of 29.98inHg at 12 AM, a lowest point of 29.86inHg at 5 PM with an avg 29.93inHg.
- HI: 80°F
- LO: 62°F
- Rainfall: 14%
- Snowfall: 0%
- Wind
10.5 mph - Humidity
79% avg. - UV Index
5.8 - Air QualityGood
- Sunrise
07:13 AM - Sunset
07:52 PM - Moonrise
08:50 AM - Moonset
08:19 PM - Moon Phase
New Moon
Overcast
Sun 9-13-26
Overcast with a high of 77°F and a low of 62°F. There might be light rainfall having a 24% chance with an estimated 0in. Wind will be moderate, blowing around 12mph on average and gusts of 21.5mph at 11 PM. The humidity will be on the higher side, averaging about 74%, the maximum being 96% at 4 AM and 46% being its lowest at 8 PM. Barometric pressure is its highest of 30.12inHg at 11 PM, a lowest point of 29.92inHg at 1 AM with an avg 29.99inHg.
- HI: 77°F
- LO: 62°F
- Rainfall: 24% | est. 0in
- Snowfall: 0%
- Wind
11.6 mph - Humidity
74% avg. - UV Index
6.1 - Air QualityGood
- Sunrise
07:14 AM - Sunset
07:50 PM - Moonrise
10:06 AM - Moonset
08:44 PM - Moon Phase
Waxing Crescent
Overcast
Mon 9-14-26
Overcast with a high of 69°F and a low of 54°F. There might be light rainfall having a 20% chance with an estimated 0in. Wind will be moderate, blowing around 15mph on average and gusts of 29.8mph at 11 PM. The humidity will be on the higher side, averaging about 65%, the maximum being 79% at 7 AM and 49% being its lowest at 4 PM. Barometric pressure is its highest of 30.25inHg at 10 AM, a lowest point of 30.09inHg at 11 PM with an avg 30.18inHg.
- HI: 69°F
- LO: 54°F
- Rainfall: 20% | est. 0in
- Snowfall: 0%
- Wind
14.5 mph - Humidity
65% avg. - UV Index
3.9 - Air QualityGood
- Sunrise
07:15 AM - Sunset
07:48 PM - Moonrise
11:21 AM - Moonset
09:13 PM - Moon Phase
Waxing Crescent
Scattered Showers
Tue 9-15-26
Scattered Showers with a high of 88°F and a low of 63°F. It will likey rain, having a 79% chance of a downpour with an estimated 0.66in. Wind will be moderate, blowing around 17mph on average and gusts of 34.4mph at 4 AM. The humidity will be on the higher side, averaging about 75%, the maximum being 98% at 11 PM and 47% being its lowest at 5 PM. Barometric pressure is its highest of 30.09inHg at 11 PM, a lowest point of 29.99inHg at 5 PM with an avg 30.03inHg.
- HI: 88°F
- LO: 63°F
- Rainfall: 79% | est. 0.66in
- Snowfall: 0%
- Wind
16.8 mph - Humidity
75% avg. - UV Index
8 - Air QualityGood
- Sunrise
07:16 AM - Sunset
07:46 PM - Moonrise
12:35 PM - Moonset
09:46 PM - Moon Phase
Waxing Crescent
Light Rain Shower
Wed 9-16-26
Light Rain Shower with a high of 82°F and a low of 60°F. It will likey rain, having a 89% chance of a downpour with an estimated 0.48in. Wind will be moderate, blowing around 13mph on average and gusts of 19.5mph at 8 PM. High humidity with average of 89% is anticipated, the maximum being 98% at 7 AM and 60% being its lowest at 2 PM. Barometric pressure is its highest of 30.16inHg at 8 PM, a lowest point of 30.08inHg at 2 AM with an avg 30.11inHg.
- HI: 82°F
- LO: 60°F
- Rainfall: 89% | est. 0.48in
- Snowfall: 0%
- Wind
12.3 mph - Humidity
89% avg. - UV Index
6 - Air QualityTBA
- Sunrise
07:17 AM - Sunset
07:45 PM - Moonrise
01:44 PM - Moonset
10:26 PM - Moon Phase
First Quarter
This 5-Day weather forecast is valid for ZIP code 49240, accurately covering the area of Grass Lake, MI.
Currently
|
53°F |
30.06 inHg.
Barometer 92%
Humidity NE 6.8 mph Wind |
| Sunny | ||
National Outlook
Stormy Skies and Sweltering Heat Ahead: Central U.S. to Mississippi Valley, 09-10 to 09-12
Thu Sep 10th 2026, 7:23am PDT
Read
Heatwave Continues in the South, Rain Moves into the Midwest | 09-13 to 09-17
Extended Forecast
Thu Sep 10th 2026, 7:26am PDT
Read
Thu Sep 10th 2026, 7:26am PDT
5 Day Forecast Nearby
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