Niagara, WI Weather & Growing Conditions
This Afternoon
62°F
Chance Rain Showers
A chance of rain showers after 3pm. Cloudy, with a high near 62. East wind around 6 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 62°F | Chance Rain Showers | 6 mph E | 26% |
| Tonight | 48°F | Mostly Cloudy | 0 to 6 mph NNE | 11% |
| Sunday | 63°F | Mostly Sunny | 6 to 13 mph NNE | 0% |
| Sunday Night | 42°F | Mostly Cloudy | 5 to 12 mph NE | 0% |
| Monday | 60°F | Mostly Cloudy | 7 mph ENE | 0% |
| Monday Night | 37°F | Partly Cloudy | 6 mph NE | 0% |
| Tuesday | 63°F | Mostly Sunny | 3 to 8 mph ENE | 1% |
| Tuesday Night | 40°F | Mostly Clear | 2 to 6 mph ENE | 1% |
| Wednesday | 66°F | Sunny | 2 to 9 mph ENE | 2% |
| Wednesday Night | 43°F | Mostly Clear then Patchy Fog | 1 to 5 mph ENE | 2% |
| Thursday | 68°F | Mostly Sunny | 1 to 6 mph E | 3% |
| Thursday Night | 45°F | Mostly Cloudy | 0 to 5 mph ENE | 4% |
| Friday | 72°F | Partly Sunny | 3 mph NE | 4% |
| Friday Night | 46°F | Partly Cloudy | 2 mph ENE | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Niagara, WI
Last spring frost
May 17
First fall frost
Oct 1
Growing season
135 days
Hardiness zone
4b
Explore more for Niagara, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Iron Mtn-Kingsford Wwtp, Mi (6.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.