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Norwalk, IA weather and climate

Polk County, IA · population 13,610 · about 925 ft elevation

Everything below is a 30 year average for 1991-2020, computed from daily climate history at Norwalk's own coordinates.

The year at a glance

Sunny days
204
clear or partly cloudy, per year
Precipitation
37 in
per year
Wet days
113
rain or snow per year
Snowfall
35 in
per year
Hot days
21
above 90 °F
Freezing nights
131
at or below 32 °F
Humidity
70%
average relative
Average temperature
51 °F
year round

Monthly temperatures

Average daily high and low for each month, in °F.

Daily highDaily low
255075JanMarMayJulSepNovDaily high, Jan: 31 °FDaily high, Feb: 36 °FDaily high, Mar: 49 °FDaily high, Apr: 62 °FDaily high, May: 72 °FDaily high, Jun: 82 °FDaily high, Jul: 86 °FDaily high, Aug: 84 °FDaily high, Sep: 77 °FDaily high, Oct: 64 °FDaily high, Nov: 48 °FDaily high, Dec: 36 °FDaily low, Jan: 13 °FDaily low, Feb: 18 °FDaily low, Mar: 29 °FDaily low, Apr: 40 °FDaily low, May: 52 °FDaily low, Jun: 62 °FDaily low, Jul: 66 °FDaily low, Aug: 64 °FDaily low, Sep: 55 °FDaily low, Oct: 42 °FDaily low, Nov: 30 °FDaily low, Dec: 19 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high313649627282868477644836
Daily low131829405262666455423019

Monthly precipitation

Total rain plus melted snow for each month, in inches.

0.02.04.0JanMarMayJulSepNovNorwalk, Jan: 1.2 inNorwalk, Feb: 1.5 inNorwalk, Mar: 2.6 inNorwalk, Apr: 4.2 inNorwalk, May: 5.4 inNorwalk, Jun: 4.9 inNorwalk, Jul: 3.6 inNorwalk, Aug: 3.7 inNorwalk, Sep: 3.4 inNorwalk, Oct: 2.8 inNorwalk, Nov: 2.0 inNorwalk, Dec: 1.6 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Norwalk1.21.52.64.25.44.93.63.73.42.82.01.6

Monthly sunny days

Days each month with clear or partly cloudy skies.

01020JanMarMayJulSepNovNorwalk, Jan: 15 daysNorwalk, Feb: 13 daysNorwalk, Mar: 16 daysNorwalk, Apr: 14 daysNorwalk, May: 16 daysNorwalk, Jun: 17 daysNorwalk, Jul: 21 daysNorwalk, Aug: 21 daysNorwalk, Sep: 22 daysNorwalk, Oct: 19 daysNorwalk, Nov: 16 daysNorwalk, Dec: 15 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Norwalk151316141617212122191615

Compare Norwalk with another city

Nearby cities and popular picks. Any two cities can be compared from the home page.

See weather for every covered Iowa city

About this data

Figures are 30 year averages for 1991-2020. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).