Ontonagon, Michigan Climate
United States
Pop. 1,324 Elev. 186 m / 610 ft
TZ: America/Detroit (UTC-4) ·
Ontonagon experiences a wide climate range, from bitterly cold winters of 8°F (-13°C) in January to mild summers reaching 79°F (26°C) in July. Wind chill can push winter lows to -2°F (-19°C). Precipitation occurs on roughly 35 days per year (22.6 in / 575 mm total), with snow on 13 days and 143 in (3638 mm) of annual accumulation. The city averages 87 sunny days per year and around 21 thunderstorm days. Ocean water temperatures reach 67°F (20°C) in summer.
| Temperature | 79°F (26°C) high | 8°F (-13°C) low |
| Feels like | -2°F (-19°C) low | |
| Rain | 35 days | 22.6 in (575 mm) /yr |
| Snow | 13 days | 143.2 in (3638 mm) /yr |
| Sky | 87 sunny | 21 stormy |
| Wind | 2.9 mph (1.3 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: May, Oct
Sky & Air by Month
Cloud cover (%)
86
Jan 86
Feb 73
Mar 65
Apr 43
May 61
Jun 45
Jul 47
Aug 57
Sep 47
Oct 69
Nov 89
Dec Humidity (%)
75
Jan 71
Feb 66
Mar 65
Apr 54
May 70
Jun 71
Jul 73
Aug 77
Sep 70
Oct 72
Nov 77
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 44 mi Houghton County Memorial Airport (CMX)
Ski resort 17 mi Porcupine Mountains Winter Sports Complex
National park 48 mi Keweenaw National Historical Park, Calumet Unit
Hospital 39 mi UP Health System
Hiking trail 22 mi Gogebic Ridge Trail
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 22°F -5°C | 8°F -13°C | 0.0 in 1 mm | 23.0 in584 mm | 1 |
| February | 24°F -4°C | 10°F -12°C | 0.2 in 5 mm | 18.4 in466 mm | 1 |
| March | 40°F 4°C | 22°F -6°C | 0.6 in 14 mm | 33.3 in846 mm | 3 |
| April | 52°F 11°C | 30°F -1°C | 3.7 in 93 mm | 14.2 in360 mm | 6 |
| May | 68°F 20°C | 43°F 6°C | 0.7 in 17 mm | — | 15 |
| June | 74°F 24°C | 53°F 12°C | 4.7 in 119 mm | — | 8 |
| July | 79°F 26°C | 58°F 15°C | 3.3 in 85 mm | — | 14 |
| August | 76°F 25°C | 57°F 14°C | 3.2 in 82 mm | — | 13 |
| September | 71°F 22°C | 53°F 12°C | 2.9 in 73 mm | — | 9 |
| October | 61°F 16°C | 43°F 6°C | 1.9 in 48 mm | — | 13 |
| November | 40°F 5°C | 28°F -2°C | 1.1 in 27 mm | 24.0 in610 mm | 4 |
| December | 26°F -3°C | 15°F -9°C | 0.4 in 9 mm | 30.4 in772 mm | 0 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 1 | 0 |
| February | 1 | 0 |
| March | 3 | 0 |
| April | 6 | 3 |
| May | 15 | 0 |
| June | 8 | 4 |
| July | 14 | 7 |
| August | 13 | 4 |
| September | 9 | 3 |
| October | 13 | 0 |
| November | 4 | 0 |
| December | 0 | 0 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 36°F 2°C | 32°F 0°C |
| February | 33°F 1°C | 32°F 0°C |
| March | 33°F 0°C | 32°F 0°C |
| April | 34°F 1°C | 34°F 1°C |
| May | 40°F 4°C | 48°F 9°C |
| June | 48°F 9°C | 60°F 16°C |
| July | 64°F 18°C | 70°F 21°C |
| August | 67°F 20°C | 68°F 20°C |
| September | 62°F 16°C | 60°F 16°C |
| October | 60°F 15°C | 54°F 12°C |
| November | 49°F 9°C | 38°F 3°C |
| December | 40°F 4°C | 32°F 0°C |