Harper Woods, Michigan Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Harper Woods weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Showers60%0.44″86°70°—
- SundayJul 5Overcast53%—79°70°-7°
- MondayJul 6Drizzle17%—73°64°-6°
- TuesdayJul 7Partly Cloudy——86°63°+13°
- WednesdayJul 8Overcast10%—89°69°+3°
- ThursdayJul 9Drizzle31%—77°68°-12°
- FridayJul 10Overcast28%—82°63°+5°
AQI 43 (Good), driven by PM2.5. AQI down 18 over the last 6 hours — air quality is improving sharply. PM scrubbed by 2 hours of recent rain — PM2.5 down to 11.0 µg/m³, PM10 to 11.8 µg/m³.
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 38. Overcast through the UV peak window (cloud cover ~89%) — afternoon ozone should stay flat.
- Present
- AQI 38
- UV peak
- 3.3 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 8
PM × Wind × Precip
PM scrubbed by 2 hours of recent rain — PM2.5 down to 11.0 µg/m³, PM10 to 11.8 µg/m³.
- PM2.5/PM10
- 0.93
- Wind
- breezy
- Recent rain
- 2h in last 6h
- Pattern
- washed out
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
- 11:30 PM
- Moonset
- 10:33 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Harper Woods at a glance
- Today vs. normal: 71°F — typical for the season
- Last frost: May 1 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 48225
15-Day Forecast — Harper Woods
- Sat87°71°60%
- Sun79°70°53%
- Mon73°64°17%
- Tue86°63°7%
- Wed89°69°10%
- Thu77°68°31%
- Fri82°63°28%
- Sat85°68°22%
- Sun81°69°18%
- Mon86°65°13%
- Tue75°67°13%
- Wed81°63°22%
- Thu86°67°35%
- Fri84°70°30%
- Sat76°64°10%
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 — Harper Woods
SPC includes Harper Woods in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
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
The year in Harper Woods tops out in July (~75°F) and dips lowest in January (~24°F), with April wettest at 3.4 inches and January driest at 1.9 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 24° | 1.9″ | 16 |
| February | 25° | 2.0″ | 14 |
| March | 35° | 2.7″ | 17 |
| April | 48° | 3.4″ | 18 |
| May | 58° | 3.2″ | 18 |
| June | 69° | 3.3″ | 16 |
| July | 75° | 3.2″ | 14 |
| August | 74° | 3.0″ | 13 |
| September | 67° | 2.8″ | 13 |
| October | 55° | 2.5″ | 13 |
| November | 40° | 2.7″ | 16 |
| December | 29° | 2.5″ | 17 |
Regional context
Per NOAA NCEI 1991-2020 normals, Harper Woods runs from a 24°F January mean to 75°F in July, a 52°F seasonal spread, with near 33.1 inches of precipitation across about 186 wet days.
Harper Woods's precipitation spreads evenly: April peaks at 3.4 inches on 18.1 wet days, while January holds 1.9 inches over 15.8 — no month dominates Harper Woods's rain calendar. That even rhythm groups Harper Woods with places like Grosse Pointe Woods, MI, Eastpointe, MI and Grosse Pointe Farms, MI.
Harper Woods reaches its last hard frost near late-May; that is the cue for kale, peas, spinach, and parsnips. Tomatoes and peppers do best set out two weeks later in Harper Woods, once nights clear the mid-40s°F. Frost returns to Harper Woods near early-October, ending the tender-crop season. A creek-bottom lot in Harper Woods can lag Harper Woods's last frost 7-10 days behind a south slope.
Similar climates: Grosse Pointe Woods, MI, Eastpointe, MI, Grosse Pointe Farms, MI, Grosse Pointe, MI, St. Clair Shores, MI.
Frequently asked
- When does it freeze in Harper Woods?
- In Harper Woods, expect the last spring frost near mid-May; Harper Woods's first autumn frost comes around mid-October.
- What is the rainy season in Harper Woods?
- Harper Woods sees its heaviest rain in April (around 3.4 inches), part of roughly 33 inches a year.
- What is the warmest month in Harper Woods?
- The warmest stretch in Harper Woods comes in July, around 75°F on average.
- What is the coldest month in Harper Woods?
- On average January is the chilliest month in Harper Woods, about 24°F.
- When can I start a vegetable garden in Harper Woods?
- Harper Woods's last frost (mid-May) cues hardy greens; in Harper Woods, hold heat-lovers two weeks past.
- How many rainy days does Harper Woods get?
- Harper Woods records around 186 days of measurable precipitation annually.
- What hardiness zone is Harper Woods?
- Harper Woods sits in the USDA zone set by January lows near 24°F; the USDA ZIP tool gives the band.
- What is the 10-day forecast for Harper Woods?
- Harper Woods'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 Harper Woods?
- See this week's day-by-day rain chances for Harper Woods in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Harper Woods?
- Current conditions for Harper Woods and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Harper Woods forecast updated?
- The Harper Woods forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Harper Woods?
- Today's sunrise and sunset times for Harper Woods 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 Harper Woods?
- The next few days in Harper Woods's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
Harper Woods, Michigan occupies a warm-summer humid continental zone, with January means near 24°F and July around 75°F — a 51°F swing.
Yearly precipitation in Harper Woods totals around 33 inches, spread over about 186 days of rain or snow.
Latitude 42.4°N gives Harper Woods its 51°F swing, and with it the rhythm of Harper Woods's growing season.
ZIP codes in Harper Woods
- 48225
- 48265