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Portage, Michigan climate
Dfa Hot-summer humid continental
Portage has a strongly seasonal cool-temperate climate (Hot-summer humid continental, Köppen Dfa). The hottest month is July with an average daily high near 83°F, while the coldest is January averaging around 18°F at night. Around 33 inches of precipitation falls each year, peaking in October (3.7 inches) and easing off in February (1.3 inches).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsPortage climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 32 | 35 | 46 | 59 | 70 | 80 | 83 | 81 | 74 | 61 | 48 | 37 |
| Avg temp (°F) | 25 | 27 | 37 | 49 | 60 | 69 | 73 | 71 | 63 | 52 | 40 | 30 |
| Avg low (°F) | 18 | 20 | 27 | 38 | 49 | 58 | 62 | 60 | 53 | 42 | 33 | 24 |
| Precipitation (in) | 1.7 | 1.3 | 2.0 | 3.1 | 3.7 | 3.2 | 3.4 | 3.7 | 3.3 | 3.7 | 2.5 | 1.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 32 | 35 | 46 | 59 | 70 | 80 |
| Avg temp (°F) | 25 | 27 | 37 | 49 | 60 | 69 |
| Avg low (°F) | 18 | 20 | 27 | 38 | 49 | 58 |
| Precipitation (in) | 1.7 | 1.3 | 2.0 | 3.1 | 3.7 | 3.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 83 | 81 | 74 | 61 | 48 | 37 |
| Avg temp (°F) | 73 | 71 | 63 | 52 | 40 | 30 |
| Avg low (°F) | 62 | 60 | 53 | 42 | 33 | 24 |
| Precipitation (in) | 3.4 | 3.7 | 3.3 | 3.7 | 2.5 | 1.7 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 11 | 9 | 10 | 13 | 13 | 12 | 10 | 12 | 12 | 13 | 11 | 12 |
| Days with high ≥ 90°F (days) | — | — | — | 0.0 | 0.5 | 3 | 5 | 2 | 1 | — | — | 0.0 |
| Days with low ≤ 32°F (days) | 27 | 25 | 22 | 9 | 0.8 | — | — | — | — | 4 | 15 | 25 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 11 | 9 | 10 | 13 | 13 | 12 |
| Days with high ≥ 90°F (days) | — | — | — | 0.0 | 0.5 | 3 |
| Days with low ≤ 32°F (days) | 27 | 25 | 22 | 9 | 0.8 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 10 | 12 | 12 | 13 | 11 | 12 |
| Days with high ≥ 90°F (days) | 5 | 2 | 1 | — | — | 0.0 |
| Days with low ≤ 32°F (days) | — | — | — | 4 | 15 | 25 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 76 | 72 | 68 | 66 | 64 | 58 | 52 | 52 | 53 | 65 | 72 | 78 |
| Clear days (≤ 30% cloud) | 2 | 2 | 5 | 5 | 6 | 6 | 8 | 9 | 9 | 6 | 3 | 2 |
| Partly cloudy days (30–70%) | 9 | 8 | 9 | 9 | 10 | 12 | 13 | 13 | 10 | 9 | 8 | 7 |
| Cloudy days (≥ 70%) | 21 | 18 | 18 | 16 | 16 | 12 | 10 | 10 | 11 | 16 | 19 | 22 |
| Relative humidity (%) | 89 | 86 | 81 | 77 | 77 | 76 | 73 | 72 | 72 | 76 | 82 | 88 |
| Wind speed (mph) | 9.0 | 8.9 | 8.5 | 8.3 | 7.0 | 5.8 | 5.3 | 5.1 | 5.8 | 7.0 | 7.8 | 8.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 76 | 72 | 68 | 66 | 64 | 58 |
| Clear days (≤ 30% cloud) | 2 | 2 | 5 | 5 | 6 | 6 |
| Partly cloudy days (30–70%) | 9 | 8 | 9 | 9 | 10 | 12 |
| Cloudy days (≥ 70%) | 21 | 18 | 18 | 16 | 16 | 12 |
| Relative humidity (%) | 89 | 86 | 81 | 77 | 77 | 76 |
| Wind speed (mph) | 9.0 | 8.9 | 8.5 | 8.3 | 7.0 | 5.8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 52 | 52 | 53 | 65 | 72 | 78 |
| Clear days (≤ 30% cloud) | 8 | 9 | 9 | 6 | 3 | 2 |
| Partly cloudy days (30–70%) | 13 | 13 | 10 | 9 | 8 | 7 |
| Cloudy days (≥ 70%) | 10 | 10 | 11 | 16 | 19 | 22 |
| Relative humidity (%) | 73 | 72 | 72 | 76 | 82 | 88 |
| Wind speed (mph) | 5.3 | 5.1 | 5.8 | 7.0 | 7.8 | 8.1 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Kalamazoo Battle Creek Intl AP (NOAA GHCN station USW00094815), about 4 km from the city centre.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.