Davenport, Iowa Weather
Prairie lightning bugs rise. Day 76 of spring. Read this microseason across nine climate regions →
Davenport weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast——85°55°—
- ThursdayJun 4Overcast12%—87°60°+2°
- FridayJun 5Showers60%0.15″81°67°-6°
- SaturdayJun 6Heavy Showers59%1.1″85°64°+4°
- SundayJun 7Light Drizzle26%—83°67°-2°
- MondayJun 8Light Showers48%0.01″76°66°-7°
- TuesdayJun 9Drizzle26%—83°70°+7°
Ozone at AQI 78 now. AQI flat over the last 6 hours (within ±3 points). With UV 8.5 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 63 by mid-afternoon.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 78 now. With UV 8.5 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 63 by mid-afternoon.
- Present
- AQI 78
- UV peak
- 8.5 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 63
PM × Wind × Precip
PM2.5 at 6.1 µg/m³ (AQI 34) with a 0.82 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.82
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
The higher the clouds, the finer the weather.
- Moonrise
- 4:00 AM
- Moonset
- 12:56 PM
- In sign
- ♑︎ Capricorn
Prairie lightning bugs rise
Davenport at a glance
- Today vs. normal: 9°F above the seasonal normal for this latitude
- Last frost: April 25 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 3, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Davenport
SPC has placed Davenport in the Marginal Risk category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3MRGLMarginal Risk
Isolated severe storms possible. Limited threat for hail or damaging wind.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | lettuce, peas, spinach, radishes | — |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
July brings Davenport's peak warmth with mean temperatures around 74°F, while January delivers the year's coldest conditions at roughly 22°F. Precipitation follows its own seasonal pattern, with June receiving the most rainfall at 5.2 inches and January seeing the least at 1.5 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 22° | 1.5″ | 4 |
| February | 27° | 1.8″ | 4 |
| March | 38° | 2.6″ | 5 |
| April | 50° | 3.8″ | 7 |
| May | 62° | 5.1″ | 8 |
| June | 71° | 5.2″ | 8 |
| July | 74° | 4.2″ | 6 |
| August | 73° | 4.0″ | 6 |
| September | 66° | 3.3″ | 5 |
| October | 53° | 2.9″ | 5 |
| November | 39° | 2.3″ | 5 |
| December | 28° | 2.0″ | 5 |
Regional context
The city falls within a warm-summer humid continental climate region, sharing temperature ranges, seasonal patterns, and growing conditions with other nearby cities in this climate zone.
Similar climates: Des Moines, IA, Cedar Rapids, IA, Iowa City, IA, Waterloo, IA, Sioux City, IA.
Naturalist notes
Late May brings the first ruby-throated hummingbirds to Davenport gardens, their arrival coinciding with the opening of native columbine flowers.
Wild bergamot begins its purple bloom across Iowa prairies in early July, attracting clouds of native bees during the year's warmest weeks.
Frequently asked
- When does it freeze in Davenport?
- The last spring frost in Davenport typically occurs around mid-April, while the first fall frost generally arrives around mid-November.
- What is the rainy season in Davenport?
- June stands as the wettest month, delivering about 5.2 inches of rain on average, while the city's total annual precipitation reaches roughly 39 inches.
- What is the warmest month in Davenport?
- July typically records the warmest temperatures, with averages around 74°F.
- What is the coldest month in Davenport?
- January typically brings the coldest temperatures, averaging about 22°F.
- When can I start a vegetable garden in Davenport?
- Cool-season crops like peas and lettuce can be planted around the last spring frost in mid-April, while warm-season crops such as tomatoes and peppers should wait 1–2 weeks after.
- How many rainy days does Davenport get?
- Davenport experiences about 67 rainy days per year on average.
- What hardiness zone is Davenport?
- Davenport's USDA hardiness zone depends on its lowest average winter temperature; the USDA's online lookup tool can provide the current zone designation using the city ZIP code.
Climate
Davenport, Iowa experiences a warm-summer humid continental climate. Winter temperatures in January typically hover near 22°F, while July brings average temperatures of 74°F, creating a 52°F seasonal swing.
Annual precipitation in Davenport totals about 39 inches, distributed across roughly 67 rainy days throughout the year.
Location at 41.6°N latitude, along with proximity to large water bodies and local elevation, determines the seasonal rhythms that influence plant growth, frost timing, and daily weather patterns.