Romulus, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Romulus, a city in Wayne County, Michigan.
Overnight
58°F
Clear
Clear, with a low around 58. West southwest wind around 3 mph.
7-day forecast for Romulus
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 58°F | Clear | 3 mph WSW | 0% |
| Tuesday | 84°F | Sunny | 3 to 9 mph SSW | 0% |
| Tuesday Night | 60°F | Mostly Clear | 1 to 9 mph SSW | 0% |
| Wednesday | 87°F | Sunny | 1 to 8 mph SW | 0% |
| Wednesday Night | 67°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 3 to 9 mph SW | 21% |
| Thursday | 84°F | Showers And Thunderstorms Likely | 3 to 9 mph WSW | 63% |
| Thursday Night | 65°F | Showers And Thunderstorms Likely | 2 to 7 mph WSW | 63% |
| Friday | 85°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 43% |
| Friday Night | 65°F | Chance Showers And Thunderstorms | 6 mph SW | 40% |
| Saturday | 87°F | Mostly Sunny | 3 to 10 mph SW | 8% |
| Saturday Night | 67°F | Mostly Clear then Slight Chance Rain Showers | 5 to 10 mph SW | 24% |
| Sunday | 89°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 15 mph SW | 24% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 9 to 14 mph WSW | 44% |
| Monday | 87°F | Chance Rain Showers | 10 mph WSW | 44% |
Forecast source: National Weather Service (api.weather.gov) for Romulus (42.224, -83.366). Updated through the day.
Growing snapshot for Romulus
Last spring frost
Apr 20
First fall frost
Oct 27
Growing season
188 days
Hardiness zone
6b
More local growing data for Romulus: nearby ZIP 48242 weather · frost dates · planting calendar · Michigan frost dates
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Climate data from the nearest NOAA station, Detroit Metro Ap, Mi (1.8 mi from Romulus). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.