Sussex, Wisconsin Climate
United States
Pop. 10,753 Elev. 285 m / 935 ft
TZ: America/Chicago (UTC-5) ·
Sussex has a dry climate with warm summers reaching 83°F (28°C) in July and cold winters averaging 13°F (-11°C) in January. Humidity pushes the summer feels-like temperature to 89°F (32°C), while wind chill can drive winter lows to 3°F (-16°C). Rain falls on about 44 days per year (26.7 in / 679 mm total), with snow on 8 days and 39 in (1003 mm) of annual accumulation. The city averages 114 sunny days per year and around 26 thunderstorm days. Ocean water temperatures reach 72°F (22°C) in summer.
| Temperature | 83°F (28°C) high | 13°F (-10°C) low |
| Feels like | 89°F (31°C) high | 3°F (-16°C) low |
| Rain | 44 days | 26.7 in (679 mm) /yr |
| Snow | 8 days | 39.5 in (1003 mm) /yr |
| Sky | 114 sunny | 26 stormy |
| Wind | 2.7 mph (1.2 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Sep, Oct
Sky & Air by Month
Cloud cover (%)
49
Jan 63
Feb 61
Mar 64
Apr 59
May 60
Jun 56
Jul 45
Aug 39
Sep 46
Oct 57
Nov 75
Dec Humidity (%)
58
Jan 62
Feb 60
Mar 61
Apr 64
May 66
Jun 72
Jul 72
Aug 72
Sep 70
Oct 67
Nov 75
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 21 mi General Mitchell International Airport (MKE)
Ski resort 2 mi Ausblick Ski Hill
National park 104 mi Pullman National Historical Park
Hospital 3 mi Froedtert Community Hospital - Pewaukee
Hiking trail 5 mi IAT - Merton connection
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 28°F -2°C | 13°F -10°C | 0.0 in 0 mm | 2.1 in54 mm | 13 |
| February | 31°F 0°C | 16°F -9°C | 0.2 in 4 mm | 8.5 in216 mm | 6 |
| March | 52°F 11°C | 31°F -1°C | 2.5 in 65 mm | 7.9 in200 mm | 6 |
| April | 57°F 14°C | 39°F 4°C | 2.5 in 64 mm | 1.1 in27 mm | 7 |
| May | 65°F 18°C | 47°F 8°C | 3.5 in 88 mm | — | 8 |
| June | 80°F 27°C | 62°F 17°C | 3.7 in 94 mm | — | 7 |
| July | 83°F 28°C | 66°F 19°C | 4.6 in 117 mm | — | 11 |
| August | 78°F 25°C | 62°F 17°C | 4.2 in 106 mm | — | 16 |
| September | 75°F 24°C | 56°F 13°C | 2.1 in 54 mm | — | 15 |
| October | 63°F 17°C | 48°F 9°C | 1.4 in 35 mm | — | 13 |
| November | 47°F 8°C | 33°F 1°C | 1.0 in 25 mm | 9.2 in233 mm | 9 |
| December | 31°F -1°C | 16°F -9°C | 1.1 in 27 mm | 10.8 in273 mm | 3 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 13 | 0 |
| February | 6 | 0 |
| March | 6 | 1 |
| April | 7 | 3 |
| May | 8 | 1 |
| June | 7 | 5 |
| July | 11 | 6 |
| August | 16 | 4 |
| September | 15 | 4 |
| October | 13 | 1 |
| November | 9 | 1 |
| December | 3 | 0 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 39°F 4°C | 33°F 1°C |
| February | 36°F 2°C | 33°F 0°C |
| March | 36°F 2°C | 35°F 2°C |
| April | 39°F 4°C | 42°F 5°C |
| May | 46°F 8°C | 50°F 10°C |
| June | 62°F 16°C | 62°F 17°C |
| July | 72°F 22°C | 72°F 22°C |
| August | 72°F 22°C | 71°F 22°C |
| September | 68°F 20°C | 65°F 18°C |
| October | 66°F 19°C | 58°F 14°C |
| November | 52°F 11°C | 42°F 6°C |
| December | 42°F 6°C | 34°F 1°C |