Riva, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Riva, a community in Anne Arundel County, Maryland.
Tonight
64°F
Mostly Cloudy
Mostly cloudy, with a low around 64. North wind around 9 mph.
7-day forecast for Riva
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 64°F | Mostly Cloudy | 9 mph N | 2% |
| Saturday | 80°F | Partly Sunny | 10 mph NE | 10% |
| Saturday Night | 67°F | Mostly Cloudy | 9 mph SE | 10% |
| Sunday | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 8 to 14 mph S | 31% |
| Sunday Night | 67°F | Showers And Thunderstorms Likely | 6 to 12 mph W | 67% |
| Monday | 76°F | Chance Rain Showers | 8 to 13 mph N | 45% |
| Monday Night | 62°F | Chance Rain Showers | 9 to 13 mph NE | 48% |
| Tuesday | 70°F | Rain Showers Likely | 14 to 17 mph NE | 56% |
| Tuesday Night | 59°F | Rain Showers Likely | 16 mph NE | 56% |
| Wednesday | 67°F | Chance Rain Showers | 17 mph NE | 49% |
| Wednesday Night | 59°F | Chance Showers And Thunderstorms | 13 to 17 mph NE | 48% |
| Thursday | 68°F | Chance Showers And Thunderstorms | 16 mph NE | 40% |
| Thursday Night | 57°F | Chance Showers And Thunderstorms | 8 to 14 mph N | 34% |
| Friday | 72°F | Slight Chance Rain Showers | 13 mph N | 23% |
Forecast source: National Weather Service (api.weather.gov) for Riva (38.945, -76.590). Updated through the day.
Growing snapshot for Riva
Last spring frost
Mar 27
First fall frost
Nov 13
Growing season
234 days
Hardiness zone
7b
More local growing data for Riva: nearby ZIP 21140 weather · frost dates · planting calendar · Maryland frost dates
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Climate data from the nearest NOAA station, Annapolis Police Brks, Md (5.2 mi from Riva). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.