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Climate Data for Jackson County, Wisconsin

Climate Normals and Growing Season Summary

Temperature norms and extremes for Jackson County
Chart courtesy of the Midwestern Regional Climate Center.

Growing Season Summary:

Median date of last frost in the spring: May 30. Last Spring Frost Zones.
(The last frost occurs on or after June 13 in 10 percent of the years.)

Median date of first frost in the fall: September 17. First Fall Frost Zones.
(The first frost occurs on or before August 30 in 10 percent of the years.)

Median growing season: 111 days. Range: 88 to 133 days.

For perennials, landscape plantings and fruit trees, see our Map of USDA Plant Hardiness Zones for Wisconsin.

Climate Normals Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec
Ave Daily High (F°) 24.7 31.1 43.4 59.4 72.4 80.1 84.5 81.9 73.2 61.7 43.8 28.6
Ave Daily Low (F°) 1.0 5.1 18.5 31.0 41.3 50.4 55.8 53.5 45.1 35.2 23.1 8.3
Growing Degree Days 1 2 35 167 362 485 605 555 368 199 34 2
Heating Degree Days 1615 1313 1054 594 285 75 18 41 184 512 945 1442
Cooling Degree Days 0 0 0 0 34 84 179 125 10 0 0 0
Ave Precipitation (") 1.03 1.01 2.19 2.94 3.65 3.96 4.12 4.12 4.09 2.37 1.98 1.52
Ave Snowfall (") 10.4 7.9 9.5 1.8 0.0 0.0 0.0 0.0 0.0 0.1 2.8 10.3


Data from the weather station at Hatfield Hydro Plant, latitude 44°24' N, longitude 90°44' W, elevation 953 ft.

Climate Notes

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