Keokuk, Iowa Weather
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Climate of Keokuk: monthly averages
Based on 25 years of satellite and reanalysis data (2001-2025), July is usually the hottest month in Keokuk, with average daytime highs around 31°C. January is the coolest, when nights typically fall to about -8°C and frost is possible on the coldest nights. That is a wide yearly range of roughly 39°C, so the seasons feel very different from each other.
The area receives about 950 mm of rain in a typical year. Most of it falls from May to June and August, and June is the wettest month at roughly 128 mm.
For outdoor plans and travel, July and September usually offer the most comfortable weather in Keokuk, with mild days and relatively little rain.
| Month | Avg high | Avg low | Rainfall | Humidity |
|---|---|---|---|---|
| Jan | 0° | -8° | 36 mm | 83% |
| Feb | 3° | -7° | 44 mm | 80% |
| Mar | 10° | -1° | 62 mm | 77% |
| Apr | 18° | 5° | 95 mm | 73% |
| May | 23° | 12° | 120 mm | 75% |
| Jun | 28° | 18° | 128 mm | 75% |
| Jul | 31° | 20° | 94 mm | 71% |
| Aug | 30° | 18° | 101 mm | 70% |
| Sep | 26° | 14° | 84 mm | 70% |
| Oct | 18° | 6° | 81 mm | 72% |
| Nov | 10° | 0° | 54 mm | 77% |
| Dec | 3° | -6° | 50 mm | 83% |
Source: NASA POWER (MERRA-2 reanalysis), averaged over the roughly 50 km grid area around Keokuk. Values describe typical conditions, not a forecast.
About Keokuk weather
Keokuk, in Iowa's humid continental climate, typical of the US corn belt, is positioned about 230 km south-east of Des Moines. The warmer months mean warm, humid summers (June–August). Finally, there's cold winters (December–February) with regular snow. This page shows live, auto-refreshing weather for Keokuk: current conditions, an hourly breakdown, a 16-day outlook, a date-lookup tool for any past or future date, and real-time air quality, sourced from Open-Meteo. Local timezone: America/Chicago.
Frequently asked questions
Keokuk is about 230 km south-east of Des Moines, in Iowa.
Keokuk sees cold winters (December–February) with regular snow.
The live current conditions, hourly forecast and 16-day outlook above are pulled in real time for Keokuk's exact coordinates. No fixed schedule, the page updates whenever you load it.
July is usually the hottest month in Keokuk, with average daytime highs of about 31°C and nights around 20°C.
The coldest nights come in January, when the average low is about -8°C and daytime highs reach around 0°C. Frost is possible on clear, calm nights.
Keokuk receives about 950 mm of rain in a typical year. June is the wettest month at roughly 128 mm, and the main rainy period is May to June and August.
July and September usually offer the most comfortable weather in Keokuk, with mild daytime temperatures and little rain.
In November Keokuk typically sees daytime highs near 10°C and lows near 0°C, with about 54 mm of rain over the month and average humidity around 77%. Check the live forecast above for this week's actual conditions.
Up to 16 days ahead using the extended forecast and date picker above; further-out or historical dates use the same date lookup tool.
The current temperature for Keokuk updates automatically at the top of this page — scroll to the hourly strip below to see how it's expected to change over the day.
Keokuk's day-to-day weather follows the broader pattern of Iowa described above. See the hourly weather forecast or the air quality index for more detail.