Sidney, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sidney, a city in Fremont County, Iowa.
This Afternoon
84°F
Slight Chance Showers And Thunderstorms
A slight chance of rain showers before 4pm, then a slight chance of showers and thunderstorms. Mostly sunny. High near 84, with temperatures falling to around 82 in the afternoon. Northwest wind around 7 mph. Chance of precipitation is 20%.
7-day forecast for Sidney
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 84°F | Slight Chance Showers And Thunderstorms | 7 mph NW | 24% |
| Tonight | 63°F | Showers And Thunderstorms Likely | 9 mph N | 57% |
| Sunday | 67°F | Chance Rain Showers | 10 mph NNE | 42% |
| Sunday Night | 59°F | Chance Rain Showers | 8 mph NNE | 54% |
| Monday | 61°F | Chance Rain Showers | 9 mph NNE | 50% |
| Monday Night | 52°F | Slight Chance Rain Showers then Mostly Cloudy | 8 mph NNE | 20% |
| Tuesday | 61°F | Mostly Cloudy | 7 mph NE | 4% |
| Tuesday Night | 48°F | Mostly Cloudy | 5 mph ENE | 2% |
| Wednesday | 63°F | Partly Sunny | 5 mph ESE | 1% |
| Wednesday Night | 53°F | Mostly Cloudy then Slight Chance Rain Showers | 5 mph SE | 16% |
| Thursday | 67°F | Chance Rain Showers | 7 mph SE | 40% |
| Thursday Night | 59°F | Chance Rain Showers | 3 mph SE | 27% |
| Friday | 69°F | Slight Chance Rain Showers | 5 mph ESE | 22% |
| Friday Night | 61°F | Mostly Cloudy then Chance Rain Showers | 6 mph ESE | 26% |
Forecast source: National Weather Service (api.weather.gov) for Sidney (40.746, -95.645). Updated through the day.
Growing snapshot for Sidney
Last spring frost
Apr 19
First fall frost
Oct 19
Growing season
182 days
Hardiness zone
5b
More local growing data for Sidney: nearby ZIP 51652 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Sidney 1Sse, Ia (2.7 mi from Sidney). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.