Muscatine climate — normals and trends
Muscatine (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 10.0 °C and it receives 920 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (23.9 °C on average) and the coldest is January (-6.0 °C). Rainfall peaks in May.
Muscatine averages 120 frost days, 30 hot days (≥ 30 °C) and 108 rainy days per year.
Muscatine has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The number of frost days there went from about 130 to 110 per year over the period.
The hottest day of the period reached 39.8 °C (on 16 August 1988) and the coldest -34.0 °C (on 3 February 1996).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
MuscatineIowa
- coords
- 41.42°, -91.04°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.0°C
Average daily high
14.8°C
Average daily low
5.4°C
Annual rainfall
920mm
Sunshine / day
8.9h
Mean relative humidity
71%
Average peak wind
19.6km/h
Seasonal range
29.9°C
Frost days (< 0 °C)
120 d/yr
Hot days (≥ 30 °C)
30 d/yr
Rainy days (≥ 1 mm)
108 d/yr
Annual snowfall
64.1 cm
Average feels-like high
12.9 °C
Average feels-like low
2.5 °C
Average peak gust
38.0 km/h
Tropical nights (≥ 20 °C)
33 d/yr
Solar radiation
15.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.31 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
39.8 °C
16 August 1988
Coldest day
-34.0 °C
3 February 1996
Wettest day
113 mm
13 September 1961
Windiest day
54.8 km/h
6 April 1997
Strongest gust
103.7 km/h
10 November 1998
Hottest feels-like
44.4 °C
19 July 2011
Coldest feels-like
-39.4 °C
16 January 2009
Snowiest day
24.8 cm
5 March 1959
Sunniest day
14.4 h
30 June 1944
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -0.9 °C | +1.0 °C | 35 mm | -7 mm |
| Feb | 0.8 °C | 0.0 °C | 16 mm | -26 mm |
| Mar | 13.5 °C | +5.7 °C | 102 mm | +26 mm |
| Apr | 17.0 °C | +1.5 °C | 121 mm | +19 mm |
| May | 22.5 °C | +0.9 °C | 80 mm | -29 mm |
| Jun | 28.7 °C | +1.9 °C | 127 mm | +19 mm |
| Jul | 29.8 °C | +1.2 °C | 134 mm | +46 mm |
| Aug | 27.5 °C | -0.2 °C | 81 mm | -8 mm |
| Sep | 27.5 °C | +3.6 °C | 21 mm | -65 mm |
| Oct | 21.0 °C | +3.6 °C | 38 mm | -33 mm |
| Nov | 10.3 °C | +1.7 °C | 47 mm | -11 mm |
| Dec | 0.7 °C | -0.5 °C | 46 mm | -3 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Muscatine?
Muscatine has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 10.0 °C and it receives 920 mm of precipitation per year.
What is the hottest day ever recorded in Muscatine?
The hottest day measured in Muscatine between 1940 and 2025 was 16 August 1988, reaching 39.8 °C.
What is the coldest day in Muscatine?
The coldest day measured in Muscatine between 1940 and 2025 was 3 February 1996, at -34.0 °C.
Does it snow in Muscatine?
Yes. Muscatine gets on average 64.1 cm of snow per year and has around 120 frost days.
Has the climate of Muscatine warmed?
Yes: Muscatine warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Muscatine?
The wettest day measured in Muscatine between 1940 and 2025 was 13 September 1961, with 113 mm of rain in 24 hours.
What was the windiest day in Muscatine?
The windiest day measured in Muscatine between 1940 and 2025 was 6 April 1997, with winds reaching 54.8 km/h.
What is the warmest month in Muscatine?
The warmest month in Muscatine is July (23.9 °C on average); the coldest is January (-6.0 °C).
How much does it rain in Muscatine?
Muscatine receives on average 920 mm of precipitation per year, spread over about 108 rainy days.
Is it sunny in Muscatine?
Muscatine gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.
What is the biggest single-day snowfall in Muscatine?
The heaviest 24-hour snowfall measured in Muscatine between 1940 and 2025 was 5 March 1959, with 24.8 cm.
Are there tropical nights in Muscatine?
Yes: Muscatine has on average 33 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Muscatine?
In Muscatine, between 1940 and 2025, the highest apparent temperature reached 44.4 °C on 19 July 2011, and the lowest was -39.4 °C on 16 January 2009.
Compare Muscatine with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Muscatine