Broomfield, CO Weather & Growing Conditions
Today
75°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 75, with temperatures falling to around 67 in the afternoon. North northeast wind 2 to 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 9 mph NNE | 60% |
| Tonight | 51°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 to 7 mph SW | 40% |
| Sunday | 70°F | Partly Sunny then Chance Showers And Thunderstorms | 2 to 8 mph NE | 29% |
| Sunday Night | 50°F | Chance Showers And Thunderstorms then Partly Cloudy | 1 to 8 mph N | 30% |
| Monday | 72°F | Sunny | 1 to 9 mph N | 2% |
| Monday Night | 50°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 to 9 mph NE | 20% |
| Tuesday | 74°F | Mostly Sunny | 2 to 6 mph SE | 7% |
| Tuesday Night | 52°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 6 mph WSW | 16% |
| Wednesday | 76°F | Mostly Sunny | 6 mph NNE | 9% |
| Wednesday Night | 53°F | Mostly Cloudy | 6 mph WSW | 11% |
| Thursday | 78°F | Mostly Sunny | 3 to 8 mph SSW | 6% |
| Thursday Night | 55°F | Partly Cloudy | 2 to 8 mph S | 12% |
| Friday | 79°F | Mostly Sunny | 2 to 7 mph S | 11% |
| Friday Night | 55°F | Partly Cloudy | 6 mph S | 14% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Broomfield, CO
Last spring frost
May 2
First fall frost
Oct 11
Growing season
160 days
Hardiness zone
6a
Explore more for Broomfield, CO: full frost dates · planting calendar · Colorado frost dates
Climate data from the nearest NOAA station, Northglenn, Co (5.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.