Burr Oak, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Burr Oak, a community in Fillmore County, Iowa.
Today
74°F
Isolated Rain Showers then Isolated Showers And Thunderstorms
Isolated rain showers before 4pm, then isolated showers and thunderstorms between 4pm and 5pm, then scattered showers and thunderstorms. Mostly cloudy. High near 74, with temperatures falling to around 72 in the afternoon. West wind around 8 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Burr Oak
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Isolated Rain Showers then Isolated Showers And Thunderstorms | 8 mph W | 30% |
| Tonight | 58°F | Chance Showers And Thunderstorms | 6 mph NW | 56% |
| Wednesday | 74°F | Partly Sunny | 3 mph N | 7% |
| Wednesday Night | 54°F | Mostly Clear | 3 mph W | 0% |
| Thursday | 78°F | Sunny | 1 to 5 mph SW | 0% |
| Thursday Night | 59°F | Mostly Clear | 5 mph S | 0% |
| Friday | 81°F | Sunny | 5 to 10 mph SW | 7% |
| Friday Night | 63°F | Mostly Clear | 9 mph SW | 10% |
| Saturday | 82°F | Mostly Sunny | 5 to 8 mph S | 9% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 8 mph SW | 35% |
| Sunday | 83°F | Chance Showers And Thunderstorms | 9 mph SW | 35% |
| Sunday Night | 66°F | Chance Showers And Thunderstorms | 7 mph SE | 39% |
| Monday | 81°F | Chance Rain Showers | 5 to 8 mph S | 39% |
| Monday Night | 66°F | Chance Showers And Thunderstorms | 7 mph E | 31% |
Forecast source: National Weather Service (api.weather.gov) for Burr Oak (43.458, -91.862). Updated through the day.
Growing snapshot for Burr Oak
Last spring frost
May 10
First fall frost
Sep 28
Growing season
140 days
Hardiness zone
4b
More local growing data for Burr Oak: nearby ZIP 55922 weather · frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Mabel, Mn (7.2 mi from Burr Oak). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.