Grandville, Michigan Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Grandville weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle64%0.03″86°69°—
- SundayJul 5Overcast35%—84°67°-2°
- MondayJul 6Overcast——82°59°-2°
- TuesdayJul 7Overcast——82°59°0°
- WednesdayJul 8Light Drizzle14%—81°63°-1°
- ThursdayJul 9Overcast23%—78°63°-3°
- FridayJul 10Overcast24%—84°61°+6°
AQI 45 (Good), driven by Ozone. AQI down 36 over the last 6 hours — air quality is improving sharply. Ozone at AQI 40 now. With UV 3.3 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 13 around 1 PM.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 40 now. With UV 3.3 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 13 around 1 PM.
- Present
- AQI 40
- UV peak
- 3.3 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 13
PM × Wind × Precip
PM2.5 at 6.1 µg/m³, PM10 at 6.3 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.97
- Wind
- calm
- Recent rain
- 1h in last 6h
- Pattern
- background
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).








































If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:42 PM
- Moonset
- 10:45 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Grandville at a glance
- Today vs. normal: 69°F — typical for the season
- Last frost: May 3 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 49418
15-Day Forecast — Grandville
- Sat85°69°64%
- Sun84°67°35%
- Mon82°59°6%
- Tue82°59°3%
- Wed81°63°14%
- Thu78°63°23%
- Fri84°61°24%
- Sat78°61°14%
- Sun74°62°12%
- Mon89°62°12%
- Tue71°61°12%
- Wed80°57°16%
- Thu83°60°35%
- Fri82°67°42%
- Sat81°58°12%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Grandville
SPC includes Grandville in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
Microseason · July 1–5
Cicadas claim the afternoon
Annual cicada buzz begins, peaking in the heat of the day.
Day 185 of 365 · Wedge 37 of 72
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 (~74°F mean) and its coldest is January (~23°F). Rainfall peaks in June (3.8 inches) and bottoms out in February (2.0 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 23° | 2.0″ | 20 |
| February | 24° | 2.0″ | 16 |
| March | 34° | 2.7″ | 18 |
| April | 47° | 3.5″ | 17 |
| May | 57° | 3.6″ | 17 |
| June | 68° | 3.8″ | 16 |
| July | 74° | 3.1″ | 14 |
| August | 73° | 3.1″ | 14 |
| September | 65° | 3.4″ | 14 |
| October | 53° | 3.1″ | 14 |
| November | 39° | 3.2″ | 17 |
| December | 28° | 2.6″ | 21 |
Regional context
Grandville swings from 23°F in January to 74°F in July (51°F) per NOAA NCEI 1991-2020 normals; precipitation in Grandville runs about 36.2 inches on roughly 198 measurable days.
No season owns Grandville's rain: June reaches 3.8 inches across 15.7 days and February keeps 2.0 inches on 16.4, an even spread through Grandville's year. It is a balanced pattern Grandville shares with places like Wyoming, MI, Jenison, MI and Walker, MI.
Around late-May, Grandville sheds its freezing nights — kale, peas, spinach, and parsnips go into Grandville's beds. Tomatoes and peppers do best set out two weeks later in Grandville, once nights clear the mid-40s°F. By early-October, frost is back in Grandville — protect or harvest anything tender. Grandville's low ground holds frost later into spring than Grandville's benches, which run 3-5 days ahead.
Similar climates: Wyoming, MI, Jenison, MI, Walker, MI, Cutlerville, MI, Hudsonville, MI.
Frequently asked
- When does it freeze in Grandville?
- Frost typically leaves Grandville by mid-May and returns to Grandville near mid-October.
- What is the rainy season in Grandville?
- Rainfall in Grandville peaks in June near 3.8 inches, out of about 36 inches annually.
- What is the warmest month in Grandville?
- July is Grandville's warmest month, averaging about 74°F.
- What is the coldest month in Grandville?
- Grandville bottoms out in January, with a mean near 23°F.
- When can I start a vegetable garden in Grandville?
- Frost-hardy sowings begin at mid-May in Grandville; warm-season starts follow two weeks on.
- How many rainy days does Grandville get?
- Grandville averages about 198 days with measurable rain or snow each year.
- What hardiness zone is Grandville?
- Grandville's USDA zone comes from its January mean (23°F); enter the ZIP on the USDA lookup for the number.
- What is the 10-day forecast for Grandville?
- Grandville's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Grandville?
- See this week's day-by-day rain chances for Grandville in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Grandville?
- Current conditions for Grandville and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Grandville forecast updated?
- The Grandville forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Grandville?
- Today's sunrise and sunset times for Grandville are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Grandville?
- The next few days in Grandville's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
Grandville, Michigan has a warm-summer humid continental climate: January averages roughly 23°F, July about 74°F, 51°F between them.
Across the year, Grandville collects about 36 inches of precipitation over roughly 198 days with measurable rain or snow.
Latitude 42.9°N gives Grandville its 51°F swing, and with it the rhythm of Grandville's growing season.
ZIP codes in Grandville
- 49418
- 49468