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Grand Rapids, Michigan climate
Dfa Hot-summer humid continental
Grand Rapids has a strongly seasonal cool-temperate climate (Hot-summer humid continental, Köppen Dfa). The hottest month is July with an average daily high near 28°C, while the coldest is January averaging around −7°C at night. Precipitation is fairly even year-round, totalling about 1001 mm. Snowfall is heavy (197 cm of snow per year on average).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation split into rain and snow · 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 countsGrand Rapids climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | −1 | 1 | 7 | 14 | 21 | 26 | 28 | 27 | 23 | 16 | 8 | 2 |
| Avg temp (°C) | −4 | −3 | 2 | 9 | 15 | 21 | 23 | 22 | 18 | 11 | 4 | −1 |
| Avg low (°C) | −7 | −7 | −3 | 3 | 9 | 15 | 17 | 16 | 12 | 6 | 0 | −4 |
| Precipitation (mm) | 64 | 54 | 61 | 101 | 102 | 100 | 98 | 90 | 87 | 102 | 79 | 63 |
| Snowfall (cm) | 57 | 44 | 19 | 5 | — | — | — | — | — | 1 | 18 | 53 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | −1 | 1 | 7 | 14 | 21 | 26 |
| Avg temp (°C) | −4 | −3 | 2 | 9 | 15 | 21 |
| Avg low (°C) | −7 | −7 | −3 | 3 | 9 | 15 |
| Precipitation (mm) | 64 | 54 | 61 | 101 | 102 | 100 |
| Snowfall (cm) | 57 | 44 | 19 | 5 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 27 | 23 | 16 | 8 | 2 |
| Avg temp (°C) | 23 | 22 | 18 | 11 | 4 | −1 |
| Avg low (°C) | 17 | 16 | 12 | 6 | 0 | −4 |
| Precipitation (mm) | 98 | 90 | 87 | 102 | 79 | 63 |
| Snowfall (cm) | — | — | — | 1 | 18 | 53 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 17 | 13 | 12 | 13 | 12 | 11 | 10 | 10 | 10 | 13 | 13 | 16 |
| Days with high ≥ 32°C (days) | — | — | — | — | 0.4 | 3 | 4 | 2 | 0.7 | — | — | — |
| Days with low ≤ 0°C (days) | 28 | 26 | 23 | 10 | 0.9 | — | — | — | 0.2 | 4 | 16 | 26 |
| Days with snowfall ≥ 2.5 cm (days) | 7 | 5 | 2 | 0.5 | — | — | — | — | — | 0.1 | 2 | 6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 17 | 13 | 12 | 13 | 12 | 11 |
| Days with high ≥ 32°C (days) | — | — | — | — | 0.4 | 3 |
| Days with low ≤ 0°C (days) | 28 | 26 | 23 | 10 | 0.9 | — |
| Days with snowfall ≥ 2.5 cm (days) | 7 | 5 | 2 | 0.5 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 10 | 10 | 10 | 13 | 13 | 16 |
| Days with high ≥ 32°C (days) | 4 | 2 | 0.7 | — | — | — |
| Days with low ≤ 0°C (days) | — | — | 0.2 | 4 | 16 | 26 |
| Days with snowfall ≥ 2.5 cm (days) | — | — | — | 0.1 | 2 | 6 |
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 | 80 | 76 | 76 | 76 | 75 | 74 | 73 | 77 | 82 | 88 |
| Wind speed (mph) | 8.7 | 8.7 | 8.2 | 8.0 | 6.8 | 5.7 | 5.2 | 5.1 | 5.8 | 7.0 | 7.5 | 7.8 |
| 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 | 80 | 76 | 76 | 76 |
| Wind speed (mph) | 8.7 | 8.7 | 8.2 | 8.0 | 6.8 | 5.7 |
| 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 (%) | 75 | 74 | 73 | 77 | 82 | 88 |
| Wind speed (mph) | 5.2 | 5.1 | 5.8 | 7.0 | 7.5 | 7.8 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Grand Rapids (NOAA GHCN station USW00094860), about 13 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.