Middle River, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Middle River, a community in Baltimore County, Maryland.
Overnight
67°F
Mostly Cloudy
Mostly cloudy, with a low around 67. North wind around 5 mph.
7-day forecast for Middle River
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 67°F | Mostly Cloudy | 5 mph N | 0% |
| Tuesday | 85°F | Partly Sunny | 6 mph NE | 1% |
| Tuesday Night | 71°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 0 to 5 mph E | 29% |
| Wednesday | 84°F | Showers And Thunderstorms Likely | 0 to 8 mph SE | 61% |
| Wednesday Night | 75°F | Chance Showers And Thunderstorms | 0 to 7 mph S | 45% |
| Thursday | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 12 mph S | 26% |
| Thursday Night | 75°F | Chance Showers And Thunderstorms | 0 to 12 mph S | 31% |
| Friday | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 9 mph SW | 41% |
| Friday Night | 74°F | Chance Showers And Thunderstorms | 1 to 6 mph SW | 49% |
| Saturday | 88°F | Partly Sunny then Chance Showers And Thunderstorms | 2 to 7 mph SW | 46% |
| Saturday Night | 72°F | Chance Showers And Thunderstorms | 1 to 6 mph SW | 46% |
| Sunday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 6 mph SW | 18% |
| Sunday Night | 74°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 1 to 6 mph SW | 18% |
| Monday | 91°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 8 mph SW | 16% |
Forecast source: National Weather Service (api.weather.gov) for Middle River (39.340, -76.429). Updated through the day.
Growing snapshot for Middle River
Last spring frost
Mar 24
First fall frost
Nov 21
Growing season
244 days
Hardiness zone
8a
More local growing data for Middle River: nearby ZIP 21220 weather · frost dates · planting calendar · Maryland frost dates
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Climate data from the nearest NOAA station, Md Sci Ctr Baltimore, Md (12.4 mi from Middle River). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.