Florissant, CO Weather & Growing Conditions
This Afternoon
69°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly sunny. High near 69, with temperatures falling to around 64 in the afternoon. Southwest wind around 12 mph, with gusts as high as 18 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Chance Showers And Thunderstorms | 12 mph SW | 42% |
| Tonight | 42°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 to 10 mph WSW | 16% |
| Sunday | 69°F | Sunny | 5 to 13 mph W | 3% |
| Sunday Night | 42°F | Partly Cloudy | 1 to 9 mph N | 9% |
| Monday | 69°F | Mostly Sunny | 3 to 9 mph SW | 1% |
| Monday Night | 45°F | Partly Cloudy | 5 to 10 mph S | 11% |
| Tuesday | 70°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 9 mph SW | 28% |
| Tuesday Night | 45°F | Chance Showers And Thunderstorms then Mostly Cloudy | 9 mph SSW | 38% |
| Wednesday | 69°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 8 mph WSW | 15% |
| Wednesday Night | 45°F | Slight Chance Rain Showers then Mostly Cloudy | 3 to 7 mph NW | 16% |
| Thursday | 68°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 9 mph SSE | 25% |
| Thursday Night | 46°F | Chance Showers And Thunderstorms | 3 to 10 mph SW | 39% |
| Friday | 67°F | Chance Rain Showers then Chance Showers And Thunderstorms | 3 to 10 mph SW | 45% |
| Friday Night | 45°F | Chance Rain Showers | 7 to 10 mph SSW | 37% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Florissant, CO
Last spring frost
Jun 2
First fall frost
Sep 19
Growing season
108 days
Hardiness zone
5b
Explore more for Florissant, CO: full frost dates · planting calendar · Colorado frost dates
Climate data from the nearest NOAA station, Lake George 8 Sw, Co (10.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.