Muskegon, Michigan Weather
Day 93 of summer. Read today’s microseason across nine climate regions →
Muskegon weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 12:20 AM EDT · Open-Meteo
- TodaySep 21Overcast——63°49°—
- TuesdaySep 22Overcast——63°45°0°
- WednesdaySep 23Overcast——70°51°+7°
- ThursdaySep 24Overcast——69°54°-1°
- FridaySep 25Overcast——73°48°+4°
- SaturdaySep 26Overcast——70°49°-3°
- SundaySep 27Overcast——73°53°+3°
Air quality now AQI 31 · Good
AQI 31 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 30. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
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 30. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 30
- UV peak
- 3.3 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 7
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).
September dries up ditches or breaks down bridges.
- Moonrise
- 5:28 PM
- Moonset
- 1:54 AM
- In sign
- ♑︎ Capricorn
Muskegon at a glance
- Today vs. normal: Today averages 56°F (high 63°F, low 49°F), 5°F below the 61°F normal for Sep 21
- Last frost: April 30 (1991–2020 median, NOAA station 7 km away)
- Microseason: Sep 21–25
- Planting calendar: September — plant garlic (overwinter); harvest tomatoes, peppers, beans, summer squash, winter squash
15-Day Forecast — Muskegon
- Mon63°49°1%
- Tue63°45°1%
- Wed70°51°1%
- Thu69°54°1%
- Fri73°48°0%
- Sat70°49°0%
- Sun73°53°6%
- Mon75°50°9%
- Tue70°53°24%
- Wed72°60°24%
- Thu69°52°18%
- Fri79°49°29%
- Sat76°57°27%
- Sun61°48°19%
- Mon54°44°24%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Muskegon
Interactive wind and temperature map centered on Muskegon — it loads in your browser. Open the full weather map.
Right now in the garden
Fall planting + final harvests
As of September 21, the season's first frost (typically October 19) is approaching. Pick what frost-tender plants still carry before the next cold front. This city's planting calendar for September: plant garlic (overwinter); harvest tomatoes, peppers, beans, summer squash, and winter squash.
Sun & seasons in Muskegon
Muskegon sits in Muskegon County, where the year’s longest day runs 15h 23m of daylight and its shortest just 8h 58m — a swing of +6h 25m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Detroit, the state’s largest city, lies about 170 miles to the ESE. The nearest town Muskegon tracks is Grand Rapids, roughly 35 miles to the ESE.
Air quality in Muskegon
Air quality in Muskegon’s county has held roughly steady since 2020; its cleanest year on record was 2020 (median AQI 37). See the full air-quality history for Muskegon.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| April | lettuce, peas, spinach, radishes | — |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, spinach, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| July | tomatoes, peppers, beans, squash | lettuce, peas, spinach, beans, summer squash, garlic |
| August | beans, squash, fall brassicas, carrots | tomatoes, peppers, beans, summer squash, garlic |
| September | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash |
| October | — | tomatoes, peppers, beans, summer squash, winter squash, fall brassicas, carrots |
| November | — | fall brassicas, carrots |
A year in weather
Muskegon peaks at about 72°F in July and bottoms near 27°F in January; October brings the heaviest rain (3.8 inches) and February the least (2.1 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 27° | 2.4″ | 7 |
| February | 28° | 2.1″ | 5 |
| March | 36° | 2.4″ | 6 |
| April | 47° | 3.5″ | 7 |
| May | 58° | 3.4″ | 7 |
| June | 67° | 3.0″ | 6 |
| July | 72° | 2.8″ | 5 |
| August | 71° | 3.1″ | 6 |
| September | 64° | 3.3″ | 6 |
| October | 52° | 3.8″ | 8 |
| November | 41° | 2.9″ | 7 |
| December | 32° | 2.4″ | 7 |
Regional context
Similar climates North Muskegon, MI, Muskegon Heights, MI, Roosevelt Park, MI
Drawing on NOAA NCEI 1991-2020 normals, Muskegon's January averages 27°F and July 72°F — 45°F apart — while precipitation totals roughly 35.1 inches over some 76 days.
Rainfall in Muskegon splits evenly between the seasons: October tops out at 3.8 inches over 7.8 rainy days, and February logs 2.1 inches across 5.3 — neither half of Muskegon's year dominates. That even rhythm groups Muskegon with places like North Muskegon, MI, Muskegon Heights, MI and Roosevelt Park, MI.
The cool-season window in Muskegon starts at April 30, when nights stop freezing — think kale, peas, spinach, and parsnips. In Muskegon, warm-season transplants — tomatoes, peppers, basil — wait two weeks past Muskegon's frost date. It shuts near October 19, when freezes return to Muskegon and tender plants need cover. In about half of years, Muskegon's last freeze comes after April 30.
Similar climates: North Muskegon, MI, Muskegon Heights, MI, Roosevelt Park, MI, Norton Shores, MI, Wolf Lake, MI.
Frequently asked
- When does it freeze in Muskegon?
- In Muskegon, expect the last spring frost near April 30; Muskegon's first autumn frost comes around October 19.
- What is the rainy season in Muskegon?
- Muskegon sees its heaviest rain in October (around 3.8 inches), part of roughly 35 inches a year.
- What is the warmest month in Muskegon?
- Muskegon peaks in July, when the mean runs near 72°F.
- What is the coldest month in Muskegon?
- January is Muskegon's coldest month, averaging about 27°F.
- When can I start a vegetable garden in Muskegon?
- In Muskegon, sow peas and hardy greens around April 30; Muskegon's tomatoes and peppers wait two weeks more.
- How many rainy days does Muskegon get?
- Expect roughly 76 wet days a year in Muskegon.
- What hardiness zone is Muskegon?
- Because Muskegon bottoms near 27°F in January, that winter low sets Muskegon's USDA zone — verify by ZIP.
- What is the 10-day forecast for Muskegon?
- Muskegon'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 Muskegon?
- See this week's day-by-day rain chances for Muskegon in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Muskegon?
- Current conditions for Muskegon and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Muskegon forecast updated?
- The Muskegon forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Muskegon?
- Today's sunrise and sunset times for Muskegon 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 Muskegon?
- The next few days in Muskegon's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Muskegon sits at 43.2°N; its climate zone is warm-summer humid continental (Köppen approximation).
ZIP codes in Muskegon
- 49440
- 49441
- 49442
- 49443
- 49444
- 49445