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Climate Data for Brown County, Wisconsin
Climate Normals and Growing Season Summary
Chart courtesy of the Midwestern Regional Climate Center.
Growing Season Summary:
- Median date of last frost in the spring: May 10. Last Spring Frost Zones.
- (The last frost occurs on or after May 26 in 10 percent of the years.)
- Median date of first frost in the fall: October 6. First Fall Frost Zones.
- (The first frost occurs on or before September 23 in 10 percent of the years.)
- Median growing season: 152 days. Range: 129 to 165 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°) |
22.8 |
27.1 |
38.5 |
54.0 |
67.2 |
75.5 |
80.5 |
77.5 |
69.1 |
57.4 |
42.0 |
27.7 |
| Ave Daily Low (F°) |
5.8 |
9.5 |
21.4 |
33.9 |
43.7 |
53.5 |
58.9 |
56.8 |
48.8 |
38.5 |
26.8 |
12.5 |
| Growing Degree Days |
0 |
0 |
17 |
108 |
288 |
465 |
615 |
548 |
336 |
145 |
23 |
2 |
| Heating Degree Days |
1572 |
1308 |
1085 |
630 |
318 |
93 |
17 |
43 |
189 |
527 |
918 |
1389 |
| Cooling Degree Days |
0 |
0 |
0 |
0 |
23 |
78 |
163 |
108 |
9 |
0 |
0 |
0 |
| Ave Precipitation (") |
1.15 |
1.03 |
2.05 |
2.40 |
2.82 |
3.39 |
3.10 |
3.50 |
3.47 |
2.23 |
2.16 |
1.53 |
| Ave Snowfall (") |
11.7 |
8.2 |
9.4 |
2.1 |
0.1 |
0.0 |
0.0 |
0.0 |
0.0 |
0.2 |
4.6 |
12.8 |
Data from the weather station at Green Bay WSO Airport, latitude 44°29' N, longitude 88°08' W, elevation 682 ft.
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