Climateby Month

Davenport, IA climate by month

NOAA 1991-2020 normals · 588 ft elevation

Summers in Davenport are warm and often humid; winters are cold and snowy. Highs peak at 86°F in July and fall to 32°F in January. Wet days are spread through the year, from about 8 to 12 a month. Normal snowfall is about 36 in a year. The most comfortable time to visit is May.

Warmest month
86°F
July normal high
Coldest month
15°F
January normal low
Wet days a year
117
38.3 in of precipitation
Snow a year
36.1 in
normal snowfall

How warm is Davenport?

Normal highs range from 32°F in January to 86°F in July.

0°20°40°60°80°100° January: normal high 32°F (0°C), low 15°F (-9°C) 32° 15° February: normal high 37°F (3°C), low 19°F (-7°C) March: normal high 50°F (10°C), low 30°F (-1°C) April: normal high 63°F (17°C), low 40°F (4°C) May: normal high 74°F (23°C), low 51°F (11°C) June: normal high 83°F (28°C), low 61°F (16°C) July: normal high 86°F (30°C), low 65°F (18°C) 86° 65° August: normal high 84°F (29°C), low 63°F (17°C) September: normal high 78°F (26°C), low 54°F (12°C) October: normal high 65°F (18°C), low 43°F (6°C) November: normal high 50°F (10°C), low 31°F (-1°C) December: normal high 37°F (3°C), low 21°F (-6°C) JFMAMJJASOND

Bars run from the normal low to the normal high for each month.

How rainy is Davenport?

May has the most wet days (about 12); the year brings about 38 in of precipitation.

January: 9 wet days February: 9 wet days March: 10 wet days April: 11 wet days May: 12 wet days 12 June: 11 wet days July: 9 wet days August: 9 wet days September: 8 wet days 8 October: 9 wet days November: 9 wet days December: 10 wet days JFMAMJJASOND

Wet day: at least 0.01 in of rain or melted snow, counted from daily records 1991-2020.

How much does it snow?

Normal snowfall is 36.1 in a year, most of it in January.

January: 10.8 in of snow 10.8 February: 8.6 in of snow March: 4.4 in of snow April: 1.1 in of snow May: 0.0 in of snow 0.0 June: 0.0 in of snow July: 0.0 in of snow August: 0.0 in of snow September: 0.0 in of snow October: 0.3 in of snow November: 2.1 in of snow December: 8.8 in of snow JFMAMJJASOND

How humid is Davenport?

Muggy days peak in July, at about 16 days.

January: 0 muggy days 0 February: 0 muggy days March: 0 muggy days April: 0 muggy days May: 2 muggy days June: 9 muggy days July: 16 muggy days 16 August: 14 muggy days September: 4 muggy days October: 0 muggy days November: 0 muggy days December: 0 muggy days JFMAMJJASOND

Muggy day: daily mean dew point of 65°F or higher, from hourly observations 1991-2020 at Quad City International Airport, 5.9 mi SSE of the city center.

How much daylight?

Daylight ranges from about 9.2 hours in December to 15.1 hours in June.

January: 9.6 hours of daylight February: 10.6 hours of daylight March: 12.0 hours of daylight April: 13.3 hours of daylight May: 14.5 hours of daylight June: 15.1 hours of daylight 15.1 July: 14.8 hours of daylight August: 13.8 hours of daylight September: 12.5 hours of daylight October: 11.1 hours of daylight November: 9.9 hours of daylight December: 9.2 hours of daylight 9.2 JFMAMJJASOND
See all numbers
Monthly climate normals and day counts for Davenport, 1991-2020
MonthHighLowPrecip.Wet daysSnowMuggy daysDaylight
January 32°F15°F 1.7 in9 10.8 in 0 9.6 h
February 37°F19°F 1.8 in9 8.6 in 0 10.6 h
March 50°F30°F 2.6 in10 4.4 in 0 12.0 h
April 63°F40°F 3.8 in11 1.1 in 0 13.3 h
May 74°F51°F 4.7 in12 0.0 in 2 14.5 h
June 83°F61°F 5.0 in11 0.0 in 9 15.1 h
July 86°F65°F 4.2 in9 0.0 in 16 14.8 h
August 84°F63°F 4.0 in9 0.0 in 14 13.8 h
September 78°F54°F 3.3 in8 0.0 in 4 12.5 h
October 65°F43°F 2.8 in9 0.3 in 0 11.1 h
November 50°F31°F 2.3 in9 2.1 in 0 9.9 h
December 37°F21°F 2.0 in10 8.8 in 0 9.2 h

High and low: NOAA 1991-2020 normal daily high and low. Wet days: at least 0.01 in of rain or melted snow. Muggy days: daily mean dew point 65°F or higher.

Best months to visit Davenport

By our comfort score, the best month is May.

Comfort score by month (0-100) and its parts, in days per month
MonthScoreComfortableNotable rainHot or cold
Jan 270525
Feb 321519
Mar 48468
Apr 641171
May 711581
Jun 59785
Jul 54368
Aug 55565
Sep 661453
Oct 611251
Nov 42357
Dec 290520

Score = 40 × share of comfortable days + 25 × share of days without notable rain + 20 × share of days neither hot (90°F+) nor cold (high 40°F or below) + 15 × daylight. How the score works.

Frost dates in Davenport

The last spring frost typically comes around Apr 19, and the first fall frost around Oct 22, leaving 184 frost-free days in a typical year.

Frost and freeze dates for Davenport
Typical date1 year in 10
Last spring frost (32°F)Apr 19after May 4
First fall frost (32°F)Oct 22before Oct 7
Last hard freeze (28°F)Apr 8after Apr 23
First hard freeze (28°F)Oct 31before Oct 18
Frost-free season184 daysunder 164 days

"Typical" is the date with a 50% chance of a later spring frost (or earlier fall frost). Planting after the "1 year in 10" spring date gives a 90% chance of no further frost. The Old Farmer's Almanac publishes 30% dates, which fall between our typical and 1-in-10 dates.

Station: Rock Island L&D 15 (USC00117391), NOAA 1991-2020 freeze probabilities. Frost dates for every city in Iowa.

Hottest and coldest readings, 1991-2020

The highest reading was 104°F (July 7, 2012); the lowest was -33°F (January 31, 2019).

From the temperature station's daily records with NOAA quality flags removed. Not an all-time record.

Near Davenport

Similar climates elsewhere

Where the numbers come from

  • Temperature, rain, snowfall, humidity and wind by hour and cloud cover: Moline Quad City Intl Airport (USW00014923), 4.9 mi SE of the city center, 592 ft . NOAA normals and daily records, 1991-2020.
  • Snow depth: Clinton #1 (USC00131635), 25 mi NE of the city center, 585 ft . NOAA normals and daily records, 1991-2020.
  • Frost dates: Rock Island L&D 15 (USC00117391), 0.8 mi ESE of the city center, 568 ft . NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: Quad City International Airport (725440-14923), 5.9 mi SSE of the city center, 576 ft . Hourly observations, 1991-2020.

Distances from the city center (USGS). Methodology · Report an error