Dawson, IA Weather & Growing Conditions
Today
80°F
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
A slight chance of rain showers before 4pm, then a slight chance of showers and thunderstorms. Partly sunny. High near 80, with temperatures falling to around 76 in the afternoon. West northwest wind around 7 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 7 mph WNW | 24% |
| Tonight | 61°F | Chance Showers And Thunderstorms | 9 mph N | 31% |
| Sunday | 66°F | Chance Rain Showers | 12 mph NNE | 40% |
| Sunday Night | 55°F | Chance Rain Showers | 10 mph NE | 53% |
| Monday | 61°F | Rain Showers Likely | 10 mph NE | 59% |
| Monday Night | 50°F | Chance Rain Showers | 6 to 9 mph NE | 54% |
| Tuesday | 61°F | Partly Sunny | 7 mph ENE | 9% |
| Tuesday Night | 45°F | Partly Cloudy | 2 to 6 mph E | 2% |
| Wednesday | 65°F | Mostly Sunny | 5 mph E | 2% |
| Wednesday Night | 50°F | Partly Cloudy | 2 mph ESE | 9% |
| Thursday | 66°F | Slight Chance Rain Showers | 5 mph SE | 22% |
| Thursday Night | 54°F | Mostly Cloudy | 3 mph ESE | 8% |
| Friday | 68°F | Partly Sunny | 2 to 6 mph ESE | 9% |
| Friday Night | 55°F | Mostly Cloudy | 3 mph ESE | 10% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Dawson, IA
Last spring frost
Apr 25
First fall frost
Oct 10
Growing season
166 days
Hardiness zone
5a
Explore more for Dawson, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Perry, Ia (6.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.