Nashua, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Nashua, a city in Chickasaw County, Iowa.
Overnight
63°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy, with a low around 63. Southeast wind around 13 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Nashua
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Showers And Thunderstorms | 13 mph SE | 84% |
| Saturday | 73°F | Showers And Thunderstorms Likely | 8 to 12 mph S | 56% |
| Saturday Night | 57°F | Chance Showers And Thunderstorms | 10 to 14 mph N | 31% |
| Sunday | 66°F | Slight Chance Rain Showers then Mostly Cloudy | 14 to 17 mph NE | 22% |
| Sunday Night | 51°F | Mostly Cloudy then Chance Rain Showers | 15 mph NE | 27% |
| Monday | 62°F | Chance Rain Showers | 15 mph NE | 40% |
| Monday Night | 46°F | Chance Rain Showers | 8 to 13 mph NE | 35% |
| Tuesday | 61°F | Slight Chance Rain Showers then Mostly Sunny | 10 mph NE | 15% |
| Tuesday Night | 43°F | Mostly Clear | 7 mph E | 3% |
| Wednesday | 65°F | Sunny | 7 mph E | 1% |
| Wednesday Night | 48°F | Partly Cloudy | 5 mph E | 5% |
| Thursday | 66°F | Partly Sunny | 6 mph E | 10% |
| Thursday Night | 50°F | Partly Cloudy | 3 mph E | 4% |
| Friday | 69°F | Mostly Sunny | 2 to 7 mph E | 4% |
Forecast source: National Weather Service (api.weather.gov) for Nashua (42.950, -92.543). Updated through the day.
Growing snapshot for Nashua
Last spring frost
Apr 30
First fall frost
Oct 6
Growing season
157 days
Hardiness zone
5a
More local growing data for Nashua: nearby ZIP 50658 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Charles City, Ia (10.2 mi from Nashua). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.