Davenport, Iowa climate: Normal weather by month, frost dates and records
Davenport's normal year runs from 14°F January nights to 84°F July afternoons, with 36.2 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 9.9°C, January lows of −10°C, July highs of 29°C, 919 mm of precipitation a year.
- NOAA stationDavenport
- Station IDUSW00094982
- Location41.61°N 90.58°W
- Elevation754 ft (230 m)
- Population100,938
On October 23, the normal high in Davenport is 60°F and the normal low 39°F, and the chance of measurable rain or snow is 29%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Davenport.
- Jan 30° 14°
- Feb 34° 18°
- Mar 48° 29°
- Apr 61° 39°
- May 73° 51°
- Jun 81° 61°
- Jul 84° 64°
- Aug 82° 62°
- Sep 76° 53°
- Oct 63° 42°
- Nov 48° 30°
- Dec 35° 20°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Davenport each month?
July is the warmest month, with normal highs of 84°F; January the coldest, with normal lows of 14°F. The most precipitation falls in May (4.82 in), the least in January (1.14 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 30°F | 14°F | 21.9°F | 1.14 | 8 | <1 | 29 | 9 h 30 min |
| February | 34°F | 18°F | 26.3°F | 1.44 | 8 | <1 | 26 | 10 h 40 min |
| March | 48°F | 29°F | 38.6°F | 2.34 | 10 | <1 | 21 | 11 h 50 min |
| April | 61°F | 39°F | 50.3°F | 3.61 | 12 | <1 | 7 | 13 h 20 min |
| May | 73°F | 51°F | 61.7°F | 4.82 | 13 | 1 | 1 | 14 h 30 min |
| June | 81°F | 61°F | 71.1°F | 4.73 | 13 | 3 | <1 | 15 h 10 min |
| July | 84°F | 64°F | 73.7°F | 4.07 | 11 | 5 | <1 | 15 h |
| August | 82°F | 62°F | 71.7°F | 3.96 | 13 | 2 | <1 | 13 h 50 min |
| September | 76°F | 53°F | 64.6°F | 3.47 | 10 | 1 | <1 | 12 h 30 min |
| October | 63°F | 42°F | 52.5°F | 2.70 | 10 | <1 | 7 | 11 h 10 min |
| November | 48°F | 30°F | 39.2°F | 2.25 | 8 | <1 | 19 | 9 h 50 min |
| December | 35°F | 20°F | 27.6°F | 1.64 | 9 | <1 | 27 | 9 h 10 min |
| Year (annual) | 60°F | 40°F | 49.9°F | 36.17 | 124 | 13 | 136 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | −1°C | −10°C | −5.6°C | 29 mm |
| February | 1°C | −8°C | −3.2°C | 37 mm |
| March | 9°C | −2°C | 3.7°C | 59 mm |
| April | 16°C | 4°C | 10.2°C | 92 mm |
| May | 23°C | 11°C | 16.5°C | 122 mm |
| June | 27°C | 16°C | 21.7°C | 120 mm |
| July | 29°C | 18°C | 23.2°C | 103 mm |
| August | 28°C | 16°C | 22.1°C | 101 mm |
| September | 25°C | 12°C | 18.1°C | 88 mm |
| October | 17°C | 5°C | 11.4°C | 69 mm |
| November | 9°C | −1°C | 4.0°C | 57 mm |
| December | 2°C | −7°C | −2.4°C | 42 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Moline (11 miles away), gets 36 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00094982; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Davenport?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, September has the fewest days with rain (10).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00094982.
When is the last frost in Davenport?
In Davenport, the last spring frost (32°F) comes after April 23 in half of years and after May 8 in one year in ten; the first autumn frost comes before October 15 in half of years and before October 1 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- April 231 year in 10 after May 8; 9 in 10 after April 8
- First autumn frost, half of years before
- October 151 year in 10 before October 1; 9 in 10 before October 28
NOAA puts the median frost-free season at 174 days, and the season without a hard freeze (28°F) at 193 days.
A hard freeze (28°F) comes after April 12 in half of springs and before October 24 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Davenport in zone 5b across its 6 ZIP code areas (5b in 52806, the largest). By the map's own method, the average of each year's coldest night over 1991-2020, Davenport's NOAA station is in zone 5a: the coldest night of a typical year reaches −15°F (23 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Iowa · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00094982; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
What hardiness zone is each Davenport ZIP code in?
The USDA's 2023 map gives each ZIP code area one zone. Davenport's 6 ZIP code areas are all in zone 5b. Each ZIP's frost dates are in the frost tool.
Source: USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; ZIP areas in the place: Census Bureau 2020 ZCTA-to-place relationship file. A ZIP area counts when at least a tenth of its land (and 0.5 km²) lies in the place.
How hot and how cold does it get in Davenport?
In a normal year in Davenport, 13 days a year reach 90°F, 136 nights fall to 32°F or colder and 124 days bring measurable precipitation.
- Days at 90°F or more
- 13a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 136a normal year
- Days that stay below freezing
- 48high of 32°F or less
- Days with 0.01 inch of precipitation
- 124a normal year
The highest temperature in this station's record (since 1996) is 100°F, on July 7, 2012; the lowest is −28°F, on January 31, 2019.
The wettest calendar year on that record is 2009, with 46.65 in; the snowiest season is 2018–19, with 56.9 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USW00094982; records: ACIS (NOAA Regional Climate Centers), station USW00094982. Records use complete months only; a month missing more than three days is left out.
How sunny is Davenport?
Over a year 74% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Davenport, 4.0 kWh per square metre a day. July is the sunniest month (81%) and December the cloudiest (63%). Among the 459 U.S. places of 50,000 or more, that ranks tied 330th (with 21 others) in sunshine.
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 64% | 1.8 |
| February | 70% | 2.8 |
| March | 69% | 3.7 |
| April | 70% | 4.8 |
| May | 72% | 5.5 |
| June | 77% | 6.2 |
| July | 81% | 6.3 |
| August | 80% | 5.5 |
| September | 81% | 4.5 |
| October | 72% | 3.0 |
| November | 69% | 2.1 |
| December | 63% | 1.5 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Davenport need?
A normal year in Davenport brings 6,326 heating degree days, 18% more than the median U.S. place (5,373), and 879 cooling degree days, 3% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 3,209 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,334 | 0 |
| February | 1,085 | 0 |
| March | 819 | 2 |
| April | 447 | 8 |
| May | 170 | 69 |
| June | 18 | 201 |
| July | 4 | 274 |
| August | 8 | 217 |
| September | 104 | 92 |
| October | 402 | 16 |
| November | 776 | 0 |
| December | 1,159 | 0 |
| Year (annual) | 6,326 | 879 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00094982. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Davenport been warmer than normal lately?
2024 averaged 53.1°F, 3.2°F above the 1991-2020 normal of 49.9°F. 3 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 51.3°F | +1.4°F | 29.60 |
| 2022 | 49.5°F | −0.4°F | 33.61 |
| 2023 | 52.9°F | +3.0°F | 28.40 |
| 2024 | 53.1°F | +3.2°F | 35.48 |
Source: observed years: ACIS, station USW00094982. A year counts only with all twelve months complete.
How does Davenport's climate compare?
Davenport is warmer than 105 of the other 131 places with their own NOAA record in Iowa, and wetter than 55. Across the 7,247 U.S. stations with normals, its annual mean of 49.9°F is warmer than 40%.
In the Köppen classification computed from these normals, Davenport is Dfa: continental, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Davenport share this climate record?
5 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Milan, IL5,033 people · 12 mi S
- Andalusia, IL1,167 people · 14 mi SW
- Oak Grove, IL470 people · 14 mi S
- Rock Island Arsenal, IL372 people · 7 mi S
- Taylor Ridge, IL237 people · 16 mi S
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
What do Davenport's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Davenport. This page uses Davenport; the other differs by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Davenport Weather Office USC00132070 | in town | 750 ft | 49.8°F | 13°F | 84°F | 37.9 | – | April 21 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Davenport's climate
What is the coldest month in Davenport?
January, with a normal high of 30°F and a normal low of 14°F. The warmest is July (84°F by day, 64°F at night).
Does it snow in Davenport?
Yes. NOAA publishes no 1991-2020 snowfall normal for Davenport's NOAA station; the nearest record that keeps one, Moline (11 miles away), records 36 inches of snow in a normal year.
What is the rainiest month in Davenport?
May, with 4.82 in of precipitation in a normal year; the driest is January with 1.14 in.
What plant hardiness zone is Davenport in?
The USDA's 2023 map puts Davenport in zone 5b across its 6 ZIP code areas (5b in 52806, the largest). By the same method at Davenport's NOAA station, the coldest night of a typical year reaches −15°F (23 years, 1991-2020): zone 5a.
How late can frost come in Davenport?
In half of years the last 32°F night comes after April 23; in one year in ten it comes after May 8. Waiting until May 8 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Davenport in OctoberThis month day by day, its records and recent years
- Iowa climateThe statewide normals and every place in the state
- Rock Island, IL6 miles from this station, 50.3°F a year
- Le Claire, IA10 miles from this station, 50.6°F a year
- Moline, IL11 miles from this station, 51.2°F a year
- Clinton, IA21 miles from this station, 50.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made