Diamondhead Lake, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Diamondhead Lake, a community in Dallas County, Iowa.
Today
83°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 7am. Mostly cloudy. High near 83, with temperatures falling to around 80 in the afternoon. Northwest wind 5 to 12 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Diamondhead Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Chance Showers And Thunderstorms | 5 to 12 mph NW | 31% |
| Tonight | 62°F | Showers And Thunderstorms | 5 to 12 mph NNE | 87% |
| Wednesday | 73°F | Chance Showers And Thunderstorms | 5 to 8 mph NE | 48% |
| Wednesday Night | 57°F | Slight Chance Rain Showers then Partly Cloudy | 1 to 7 mph NE | 19% |
| Thursday | 81°F | Mostly Sunny | 1 to 5 mph ENE | 3% |
| Thursday Night | 61°F | Mostly Clear | 5 mph SSE | 3% |
| Friday | 86°F | Mostly Sunny | 3 to 8 mph S | 4% |
| Friday Night | 67°F | Mostly Clear | 7 mph S | 10% |
| Saturday | 90°F | Sunny | 5 to 12 mph S | 8% |
| Saturday Night | 73°F | Mostly Clear | 12 to 15 mph SSW | 10% |
| Sunday | 91°F | Mostly Sunny | 14 mph S | 10% |
| Sunday Night | 71°F | Slight Chance Showers And Thunderstorms | 10 to 14 mph SSE | 29% |
| Monday | 91°F | Chance Showers And Thunderstorms then Mostly Sunny | 15 mph SSW | 29% |
| Monday Night | 72°F | Chance Showers And Thunderstorms | 15 mph SSE | 26% |
Forecast source: National Weather Service (api.weather.gov) for Diamondhead Lake (41.555, -94.260). Updated through the day.
Growing snapshot for Diamondhead Lake
Last spring frost
May 2
First fall frost
Oct 3
Growing season
153 days
Hardiness zone
5a
More local growing data for Diamondhead Lake: nearby ZIP 50233 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Guthrie Ctr, Ia (15.3 mi from Diamondhead Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.