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Davenport Weather by Month

Best time to visit Davenport
August–September
Average daily high Wet days Best window
Warmest month
Jul
29.2°C average high
Wettest month
May
131.1mm
Coolest month
Jan
-0.2°C average high
Peak comfort score
84
out of 100

The year at a glance

-15°-5°15°25°35°0131mmJFMAMJJASOND
Daily low to high range Rainfall (right axis)

Month by month

MonthHighLowRainWet daysScore
January -0.2°-8.5°40.9mm 10.79
February 2.9°-6.7°45.6mm 914
March 9.6°-0.6°71.1mm 10.442
April 16.6°5.4°98.8mm 12.265
May 22.6°11.9°131.1mm 13.274
June 27.8°17.7°130.3mm 12.173
July 29.2°19.8°104.3mm 8.474
August 28.3°18.9°103.3mm 9.476
September 25.5°14.4°79.9mm 7.884
October 18°7.8°76.3mm 9.974
November 10°0.5°49.5mm 948
December 2.7°-5°52.1mm 10.514

Averages from ROCK ISLAND LOCK AND DAM 15, IL US, 1.2km away, over 1995–2024.

What each month is like

January

January in Davenport averages a daily high of -0.2°C with nights around -8.5°C. Expect roughly 10.7 wet days totalling 40.9mm. A hard month to visit for comfort alone.

February

February in Davenport averages a daily high of 2.9°C with nights around -6.7°C. Expect roughly 9 wet days totalling 45.6mm. A hard month to visit for comfort alone.

March

March in Davenport averages a daily high of 9.6°C with nights around -0.6°C. Expect roughly 10.4 wet days totalling 71.1mm. Demanding conditions — pack for it and plan indoor options.

April

April in Davenport averages a daily high of 16.6°C with nights around 5.4°C. Expect roughly 12.2 wet days totalling 98.8mm. Generally workable, with some weather to plan around.

May

May in Davenport averages a daily high of 22.6°C with nights around 11.9°C. Expect roughly 13.2 wet days totalling 131.1mm. Generally workable, with some weather to plan around.

June

June in Davenport averages a daily high of 27.8°C with nights around 17.7°C. Expect roughly 12.1 wet days totalling 130.3mm. Generally workable, with some weather to plan around.

July

July in Davenport averages a daily high of 29.2°C with nights around 19.8°C. Expect roughly 8.4 wet days totalling 104.3mm. Generally workable, with some weather to plan around.

August

August in Davenport averages a daily high of 28.3°C with nights around 18.9°C. Expect roughly 9.4 wet days totalling 103.3mm. Comfortable conditions for being outdoors all day.

September

September in Davenport averages a daily high of 25.5°C with nights around 14.4°C. Expect roughly 7.8 wet days totalling 79.9mm. Comfortable conditions for being outdoors all day.

October

October in Davenport averages a daily high of 18°C with nights around 7.8°C. Expect roughly 9.9 wet days totalling 76.3mm. Generally workable, with some weather to plan around.

November

November in Davenport averages a daily high of 10°C with nights around 0.5°C. Expect roughly 9 wet days totalling 49.5mm. Demanding conditions — pack for it and plan indoor options.

December

December in Davenport averages a daily high of 2.7°C with nights around -5°C. Expect roughly 10.5 wet days totalling 52.1mm. A hard month to visit for comfort alone.

How the score works

Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Davenport peaks at 84.

Common questions

When is the best time to visit Davenport?

Based on 30 years of records, August–September scores highest for comfort in Davenport, balancing daytime temperature against rainfall.

What is the hottest month in Davenport?

July is the warmest, averaging a daily high of 29.2°C.

What is the wettest month in Davenport?

May is the wettest, averaging 131.1mm of rain across roughly 13.2 wet days.

How cold does Davenport get?

January is the coolest month, with average daily highs around -0.2°C.

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