Superior, Wisconsin Climate
United States
Pop. 26,579 Elev. 194 m / 637 ft
TZ: America/Chicago (UTC-5) ·
Superior experiences a wide climate range, from bitterly cold winters of 6°F (-14°C) in January to mild summers reaching 72°F (22°C) in August. Wind chill can push winter lows to -8°F (-22°C). Precipitation occurs on roughly 34 days per year (26.2 in / 664 mm total), with snow on 7 days and 70 in (1778 mm) of annual accumulation. Overcast skies are common, with only 104 sunny days per year. Ocean water temperatures reach 67°F (19°C) in summer.
| Temperature | 72°F (22°C) high | 6°F (-15°C) low |
| Feels like | -8°F (-22°C) low | |
| Rain | 34 days | 26.2 in (664 mm) /yr |
| Snow | 7 days | 70.0 in (1778 mm) /yr |
| Sky | 104 sunny | 17 stormy |
| Wind | 4.0 mph (1.8 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Aug
Sky & Air by Month
Cloud cover (%)
57
Jan 67
Feb 62
Mar 65
Apr 46
May 66
Jun 49
Jul 50
Aug 59
Sep 52
Oct 57
Nov 83
Dec Humidity (%)
67
Jan 70
Feb 69
Mar 74
Apr 74
May 82
Jun 82
Jul 79
Aug 81
Sep 70
Oct 70
Nov 79
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 9 mi Duluth International Airport (DLH)
Ski resort 5 mi Spirit Mountain
National park 64 mi Frog Bay Tribal National Park
Mountain peak
(20,733 ft) 167 mi Norris Hill
Hospital 2 mi Essentia Health St. Mary's Hospital-Superior
Hiking trail 10 mi Hawk Ridge Trails
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 19°F -7°C | 6°F -15°C | 0.0 in 0 mm | 6.0 in152 mm | 7 |
| February | 21°F -6°C | 8°F -13°C | 0.1 in 2 mm | 8.5 in215 mm | 4 |
| March | 37°F 3°C | 25°F -4°C | 0.8 in 21 mm | 16.1 in410 mm | 8 |
| April | 43°F 6°C | 32°F 0°C | 3.6 in 91 mm | 11.8 in300 mm | 6 |
| May | 54°F 12°C | 43°F 6°C | 2.2 in 55 mm | 0.8 in19 mm | 17 |
| June | 64°F 18°C | 53°F 12°C | 6.0 in 152 mm | — | 8 |
| July | 72°F 22°C | 61°F 16°C | 6.5 in 166 mm | — | 14 |
| August | 72°F 22°C | 63°F 17°C | 1.6 in 41 mm | — | 11 |
| September | 67°F 20°C | 58°F 14°C | 2.9 in 75 mm | — | 8 |
| October | 59°F 15°C | 50°F 10°C | 1.3 in 32 mm | — | 11 |
| November | 41°F 5°C | 34°F 1°C | 0.8 in 20 mm | 12.8 in324 mm | 9 |
| December | 25°F -4°C | 12°F -11°C | 0.3 in 8 mm | 14.1 in358 mm | 1 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 7 | 0 |
| February | 4 | 0 |
| March | 8 | 1 |
| April | 6 | 1 |
| May | 17 | 1 |
| June | 8 | 4 |
| July | 14 | 6 |
| August | 11 | 1 |
| September | 8 | 3 |
| October | 11 | 0 |
| November | 9 | 0 |
| December | 1 | 0 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 32°F 0°C | 32°F 0°C |
| February | 32°F 0°C | 32°F 0°C |
| March | 32°F 0°C | 32°F 0°C |
| April | 33°F 1°C | 34°F 1°C |
| May | 46°F 8°C | 42°F 6°C |
| June | 55°F 13°C | 55°F 13°C |
| July | 64°F 18°C | 64°F 18°C |
| August | 67°F 19°C | 69°F 20°C |
| September | 66°F 19°C | 66°F 19°C |
| October | 61°F 16°C | 57°F 14°C |
| November | 51°F 11°C | 44°F 7°C |
| December | 38°F 3°C | 33°F 1°C |