ClimateForecastAprilMay >>

Climate in Grafton (Wisconsin), United States of America

The graphs below show the monthly weather averages over the year.

Average day and night temperature

The mean minimum and maximum temperatures over the year.

Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc.

Weather Forecasts for Grafton (WI)

Fri   Apr 26
13°C | 2°C
SE 22 km/h
7.4 mm
broken clouds and rain

broken clouds and rain

Sat   Apr 27
26°C | 9°C
SW 32 km/h
5.1 mm
almost clear and small chance of rain

almost clear and small chance of rain

Sun   Apr 28
16°C | 10°C
NE 18 km/h
9 mm
overcast and thunder

overcast and thunder

The best time of year to visit Grafton in the United States of America

During the months of June and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:

  • When is winter in Grafton?
    The coldest season / winter is in the following months: January, February and December.
  • Which is the warmest month in Grafton?
    July has an average maximum temperature of 27°C and is the warmest month of the year.
  • Which is the coldest month in Grafton?
    The coldest month is February with an average maximum temperature of -2°C.
  • Which is the wettest month in Grafton?
    April tops the wettest month list with 128 mm of rainfall.
  • Which is the driest month in Grafton?
    January is the driest month with 38 mm of precipitation.
  • Which is the sunniest month in Grafton?
    July is the sunniest month with an average of 330 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.