Dawson, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dawson, a city in Dallas County, Iowa.
This Afternoon
49°F
Cloudy
Cloudy. High near 49, with temperatures falling to around 47 in the afternoon. West wind around 14 mph, with gusts as high as 22 mph.
7-day forecast for Dawson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 49°F | Cloudy | 14 mph W | 14% |
| Tonight | 41°F | Chance Rain Showers | 12 mph WNW | 31% |
| Thursday | 50°F | Slight Chance Rain Showers then Cloudy | 13 mph NW | 19% |
| Thursday Night | 35°F | Mostly Cloudy | 5 to 9 mph N | 2% |
| Friday | 48°F | Partly Sunny | 2 to 6 mph N | 1% |
| Friday Night | 27°F | Partly Cloudy | 2 mph N | 0% |
| Saturday | 54°F | Mostly Sunny | 1 to 6 mph SSW | 0% |
| Saturday Night | 34°F | Mostly Clear | 3 mph WSW | 0% |
| Sunday | 61°F | Sunny | 3 mph W | 0% |
| Sunday Night | 37°F | Clear | 5 mph SW | 0% |
| Monday | 67°F | Sunny | 5 to 9 mph SW | 0% |
| Monday Night | 39°F | Clear | 5 mph W | 0% |
| Tuesday | 63°F | Sunny | 3 mph N | 1% |
| Tuesday Night | 40°F | Partly Cloudy | 2 mph N | 2% |
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.