Weather in Grandville, Michigan
Roses open along the stoops. Day 58 of spring. Read this microseason across nine climate regions →
- TodayMay 16Drizzle60%78°55°
- SundayMay 17Overcast21%82°59°
- MondayMay 18Light Showers59%81°65°
- TuesdayMay 19Light Showers72%75°54°
- WednesdayMay 20Overcast48%59°46°
- ThursdayMay 21Overcast—62°41°
- FridayMay 22Overcast—67°46°
- PM 2.5
- 8.1 μg/m³
- PM 10
- 9.5 μg/m³
- NO₂
- 2.3 μg/m³
- Ozone
- 120.0 μg/m³
- UV Index
- 0.6 Low
Flowers blooming in late autumn, a sure sign of a bad winter coming.
- Moonrise
- 9:39 AM
- Moonset
- 12:12 AM
- In sign
- ♉︎ Taurus
Roses open along the stoops
Grandville at a glance
- Today vs. normal: 7°F above the seasonal normal for this latitude
- Last frost: May 3 (climatological average for this latitude)
- Microseason: 28 of 72, May 16–20
- Planting window: Direct sow okra, melons, and southern peas. Thin carrot rows.
Right now in the garden
Cool-season window is open
As of May 16, the cool-season window is open or about to open. Direct-sow peas, lettuce, spinach, radishes, and brassicas now. Hold off on warm-season crops until 1–2 weeks after the last spring frost (around May).
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | — | — |
| May | lettuce, peas, spinach, radishes | lettuce, peas, radishes |
| June | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | tomatoes, peppers, beans, squash, fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | — | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
Grandville's warmest month is July (~71°F mean) and its coldest is January (~24°F). Rainfall peaks in May (4.4 inches) and bottoms out in February (2.1 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 24° | 2.7″ | 8 |
| February | 26° | 2.1″ | 7 |
| March | 34° | 2.6″ | 6 |
| April | 46° | 4.1″ | 9 |
| May | 58° | 4.4″ | 10 |
| June | 67° | 4.0″ | 8 |
| July | 71° | 3.3″ | 5 |
| August | 69° | 3.0″ | 6 |
| September | 62° | 3.5″ | 7 |
| October | 50° | 3.7″ | 10 |
| November | 39° | 3.3″ | 7 |
| December | 29° | 2.8″ | 8 |
Regional context
Grandville sits within a warm-summer humid continental climate region — a cohort that shares similar temperature ranges, seasonal patterns, and growing conditions across nearby cities.
Similar climates: Detroit, MI, Grand Rapids, MI, Lansing, MI, Ann Arbor, MI, Flint, MI.
Frequently asked
- When does it freeze in Grandville?
- Grandville's last spring frost typically falls around mid-May, and the first fall frost arrives around mid-October.
- What is the rainy season in Grandville?
- May is the wettest month with about 4.4 inches of rain on average; the city receives roughly 40 inches annually.
- What is the warmest month in Grandville?
- July is typically warmest, averaging about 71°F.
- What is the coldest month in Grandville?
- January is typically coldest, averaging about 24°F.
- When can I start a vegetable garden in Grandville?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-May); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Grandville get?
- Grandville averages about 89 rainy days per year.
- What hardiness zone is Grandville?
- Grandville's USDA hardiness zone is determined by its lowest average winter temperature; check the USDA's online lookup with the city ZIP for the current zone designation.
Climate
Grandville, Michigan sits in a warm-summer humid continental climate zone. January means hover near 24°F while July averages 71°F — a 47°F seasonal swing.
Across the year, Grandville receives about 40 inches of precipitation spread over roughly 89 rainy days.
The rhythm of the year is set by latitude (42.9°N), proximity to large water bodies, and elevation — all of which shape what grows here, when frost is likely, and what the weather story looks like day to day.