Byram, CT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Byram, a community in Westchester County, Connecticut.
This Afternoon
70°F
Mostly Sunny
Mostly sunny. High near 70, with temperatures falling to around 65 in the afternoon. Southwest wind around 8 mph.
7-day forecast for Byram
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Mostly Sunny | 8 mph SW | 0% |
| Tonight | 51°F | Partly Cloudy then Patchy Fog | 6 mph SW | 3% |
| Wednesday | 73°F | Patchy Fog then Sunny | 3 to 10 mph SW | 3% |
| Wednesday Night | 57°F | Partly Cloudy | 5 to 8 mph S | 2% |
| Thursday | 72°F | Chance Rain Showers | 5 to 9 mph S | 42% |
| Thursday Night | 61°F | Rain Showers | 7 mph S | 82% |
| Friday | 69°F | Showers And Thunderstorms | 6 mph S | 85% |
| Friday Night | 55°F | Showers And Thunderstorms then Light Rain Likely | 6 mph W | 85% |
| Saturday | 66°F | Chance Light Rain | 8 mph NW | 51% |
| Saturday Night | 44°F | Slight Chance Light Rain | 9 mph NW | 18% |
| Sunday | 61°F | Slight Chance Light Rain then Mostly Sunny | 9 mph W | 16% |
| Sunday Night | 41°F | Partly Cloudy | 7 mph W | 14% |
| Monday | 60°F | Slight Chance Light Rain | 7 to 14 mph NW | 23% |
| Monday Night | 40°F | Chance Light Rain | 10 mph W | 26% |
Forecast source: National Weather Service (api.weather.gov) for Byram (41.001, -73.654). Updated through the day.
Growing snapshot for Byram
Last spring frost
Apr 12
First fall frost
Oct 31
Growing season
200 days
Hardiness zone
7b
More local growing data for Byram: nearby ZIP 10573 weather · frost dates · planting calendar · Connecticut frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Westchester Co Ap, Ny (3.9 mi from Byram). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.