UV Index for Grafton, WI

Current Grafton UV Index

0.4 (Low)

Last Updated 58 minutes ago

Hourly Grafton UV Index

The hourly Grafton, WI UV Index forecast for Wednesday, October 22nd, 2025.

5 Day Hourly Grafton UV Index Forecast

Last Updated 21 hours ago

The UV index forecast for the next five days in Grafton, WI has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Grafton over the next five days will be 3 on Friday, October 24th at 1:00 pm.

The UV index forecast for Wednesday, October 22nd in Grafton, WI is below.

Time UV Index Risk
11am 1.1
Low
12pm 1.4
Low
1pm 1.7
Low
2pm 1.2
Low
3pm 1.4
Low
4pm 0.6
Low
5pm 0.2
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, October 23rd in Grafton, WI 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 0.4
Low
10am 1.1
Low
11am 1.9
Low
12pm 2.5
Low
1pm 2.7
Low
2pm 2.4
Low
3pm 1.7
Low
4pm 0.8
Low
5pm 0.3
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, October 24th in Grafton, WI 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 0.4
Low
10am 1.2
Low
11am 2.1
Low
12pm 2.8
Low
1pm 3
Moderate
2pm 2.6
Low
3pm 1.8
Low
4pm 0.9
Low
5pm 0.3
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, October 25th in Grafton, WI 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