UV Index for Grattan, MI

Current Grattan UV Index

0 (Low)

Last Updated 6 minutes ago

Hourly Grattan UV Index

The hourly Grattan, MI UV Index forecast for Sunday, September 14th, 2025.

5 Day Hourly Grattan UV Index Forecast

Last Updated 10 hours ago

The UV index forecast for the next five days in Grattan, MI has no days reaching the extreme level and 2 days reaching the high or very high levels. The peak UV intensity in Grattan over the next five days will be 6.2 on Sunday, September 14th at 2:00 pm.

The UV index forecast for Sunday, September 14th in Grattan, MI is below.

Time UV Index Risk
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0
Low
8am 0
Low
9am 0.6
Low
10am 1.7
Low
11am 3.2
Moderate
12pm 4.9
Moderate
1pm 6
High
2pm 6.2
High
3pm 5.4
Moderate
4pm 4
Moderate
5pm 2.3
Low
6pm 0.9
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Monday, September 15th in Grattan, MI is below.

Time UV Index Risk
12am 0
Low
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0
Low
8am 0
Low
9am 0.6
Low
10am 1.6
Low
11am 3.1
Moderate
12pm 4.8
Moderate
1pm 5.9
Moderate
2pm 6.1
High
3pm 5.3
Moderate
4pm 3.8
Moderate
5pm 2.2
Low
6pm 0.9
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Tuesday, September 16th in Grattan, MI is below.

Time UV Index Risk
12am 0
Low
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0
Low
8am 0
Low
9am 0.5
Low
10am 1.5
Low
11am 3
Moderate
12pm 4.4
Moderate
1pm 5.4
Moderate
2pm 5.5
Moderate
3pm 4.8
Moderate
4pm 3.4
Moderate
5pm 1.9
Low
6pm 0.8
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Wednesday, September 17th in Grattan, MI is below.

Time UV Index Risk
12am 0
Low
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0
Low
8am 0
Low