Brighton, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Brighton, a city in Adams County, Colorado.
Today
77°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms between noon and 3pm, then showers and thunderstorms likely. Mostly sunny. High near 77, with temperatures falling to around 70 in the afternoon. Northeast wind 2 to 9 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Brighton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 9 mph NE | 73% |
| Tonight | 51°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 to 9 mph SE | 45% |
| Sunday | 71°F | Partly Sunny then Chance Showers And Thunderstorms | 2 to 9 mph NE | 30% |
| Sunday Night | 49°F | Chance Showers And Thunderstorms then Partly Cloudy | 1 to 8 mph E | 30% |
| Monday | 73°F | Mostly Sunny | 1 to 10 mph SSE | 2% |
| Monday Night | 50°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 to 10 mph SSE | 34% |
| Tuesday | 77°F | Sunny | 2 to 8 mph S | 5% |
| Tuesday Night | 53°F | Partly Cloudy | 3 to 9 mph S | 11% |
| Wednesday | 78°F | Mostly Sunny | 2 to 7 mph NNE | 6% |
| Wednesday Night | 54°F | Mostly Cloudy | 3 to 7 mph SSW | 12% |
| Thursday | 79°F | Mostly Sunny | 2 to 8 mph NE | 5% |
| Thursday Night | 55°F | Partly Cloudy | 3 to 8 mph S | 13% |
| Friday | 81°F | Mostly Sunny | 2 to 9 mph S | 10% |
| Friday Night | 55°F | Slight Chance Rain Showers then Partly Cloudy | 5 to 9 mph S | 15% |
Forecast source: National Weather Service (api.weather.gov) for Brighton (39.966, -104.794). Updated through the day.
Growing snapshot for Brighton
Last spring frost
May 3
First fall frost
Oct 7
Growing season
155 days
Hardiness zone
5b
More local growing data for Brighton: nearby ZIP 80601 weather · frost dates · planting calendar · Colorado frost dates
Nearby towns & communities
Bennett
Berkley
Byers
Comanche Creek
Commerce City
Derby
Federal Heights
Lochbuie
Northglenn
Peoria
Shaw Heights
Sherrelwood
Strasburg
Thornton
Todd Creek
Twin Lakes
Welby
Westminster
Climate data from the nearest NOAA station, Brighton 3 Se, Co (2 mi from Brighton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.