Dawson, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dawson, a city in Dallas County, Iowa.
Today
50°F
Cloudy
Cloudy. High near 50, with temperatures falling to around 48 in the afternoon. West wind around 15 mph, with gusts as high as 23 mph.
7-day forecast for Dawson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 50°F | Cloudy | 15 mph W | 11% |
| Tonight | 42°F | Cloudy then Chance Rain Showers | 12 mph WNW | 29% |
| Thursday | 53°F | Slight Chance Rain Showers then Mostly Cloudy | 12 mph NW | 22% |
| Thursday Night | 37°F | Mostly Cloudy | 5 to 8 mph N | 4% |
| Friday | 50°F | Mostly Sunny | 2 to 6 mph N | 2% |
| Friday Night | 29°F | Partly Cloudy | 2 mph N | 0% |
| Saturday | 54°F | Mostly Sunny | 3 mph SW | 0% |
| Saturday Night | 35°F | Mostly Clear | 3 mph WSW | 0% |
| Sunday | 59°F | Sunny | 5 mph W | 0% |
| Sunday Night | 37°F | Clear | 3 mph SW | 0% |
| Monday | 65°F | Sunny | 3 to 8 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 5 mph WNW | 0% |
| Tuesday | 64°F | Sunny | 3 mph NNW | 0% |
| Tuesday Night | 41°F | Partly Cloudy | 2 mph SE | 1% |
Forecast source: National Weather Service (api.weather.gov) for Dawson (41.843, -94.220). Updated through the day.
Growing snapshot for Dawson
Last spring frost
Apr 25
First fall frost
Oct 10
Growing season
166 days
Hardiness zone
5a
More local growing data for Dawson: nearby ZIP 50066 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Perry, Ia (6.9 mi from Dawson). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.