Morrison, CO Weather & Growing Conditions
Tonight
53°F
Chance Showers And Thunderstorms then Partly Cloudy
A chance of showers and thunderstorms before 8pm, then a slight chance of showers and thunderstorms between 8pm and 9pm. Partly cloudy, with a low around 53. West wind around 6 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Chance Showers And Thunderstorms then Partly Cloudy | 6 mph W | 33% |
| Saturday | 69°F | Mostly Sunny then Chance Showers And Thunderstorms | 6 mph ENE | 63% |
| Saturday Night | 50°F | Chance Showers And Thunderstorms then Partly Cloudy | 1 to 5 mph NW | 47% |
| Sunday | 64°F | Chance Showers And Thunderstorms | 2 to 6 mph N | 52% |
| Sunday Night | 48°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SE | 27% |
| Monday | 65°F | Sunny | 0 to 8 mph SE | 4% |
| Monday Night | 50°F | Mostly Clear | 1 to 6 mph WNW | 9% |
| Tuesday | 69°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 mph ESE | 30% |
| Tuesday Night | 51°F | Chance Showers And Thunderstorms then Mostly Cloudy | 5 mph W | 26% |
| Wednesday | 69°F | Partly Sunny then Chance Showers And Thunderstorms | 5 mph SSE | 28% |
| Wednesday Night | 52°F | Slight Chance Rain Showers then Mostly Cloudy | 3 mph NW | 20% |
| Thursday | 69°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 2 to 6 mph NNE | 22% |
| Thursday Night | 53°F | Chance Rain Showers then Mostly Cloudy | 3 mph SW | 30% |
| Friday | 71°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 mph SSE | 23% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Morrison, CO
Last spring frost
May 23
First fall frost
Sep 22
Growing season
118 days
Hardiness zone
5b
Explore more for Morrison, CO: full frost dates · planting calendar · Colorado frost dates
Climate data from the nearest NOAA station, Evergreen, Co (6.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.