Best Time to See Hummingbirds in Iowa
September, May and August is the best time to see hummingbirds in Iowa. Based on 400 verified iNaturalist observations, here is exactly when hummingbirds are most active across the year in Iowa.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 28, 2026.
Ruby-throated Hummingbird · Ali Powell CC BY
Ruby-throated Hummingbird · evangrimes CC BY
Ruby-throated Hummingbird · Curtis Meyers CC BY-SA
400 verified observations of hummingbirds in Iowa, recorded across 8 months of the year on iNaturalist.
When hummingbirds are recorded in Iowa
Peak month
September
100 records (25% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 0 | 0% |
| February | 0 | 0% |
| March | 0 | 0% |
| April | 3 | 0.8% |
| Maypeak | 92 | 23% |
| June | 58 | 14.5% |
| July | 53 | 13.3% |
| Augustpeak | 88 | 22% |
| Septemberpeak | 100 | 25% |
| October | 4 | 1% |
| November | 0 | 0% |
| December | 2 | 0.5% |
Hummingbirds you are most likely to see
| Species | Verified observations |
|---|---|
| Ruby-throated Hummingbird | 388 |
| Rufous Hummingbird | 4 |
| Mexican Violetear | 1 |
Weather to expect, source Open-Meteo
Typical weather in Iowa
Recent typical conditions by month, so you can plan a trip around both when hummingbirds are active and what the weather is doing. The best months to look for hummingbirds sit around 52 to 83 degrees Fahrenheit, so pack for that.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 29°F | 13°F | 1.8" |
| Feb | 30°F | 11°F | 1.3" |
| Mar | 48°F | 29°F | 2.6" |
| Apr | 60°F | 39°F | 2.5" |
| Maybest time | 70°F | 52°F | 5.3" |
| Jun | 82°F | 63°F | 4.1" |
| Jul | 84°F | 67°F | 3.6" |
| Augbest time | 83°F | 65°F | 3" |
| Sepbest time | 78°F | 59°F | 2.9" |
| Oct | 61°F | 44°F | 4.2" |
| Nov | 48°F | 31°F | 1.6" |
| Dec | 39°F | 23°F | 1.5" |
Typical recent conditions (5-year means) from the Open-Meteo archive, averaged for Iowa. Weather varies year to year, so treat these as a guide.
More on hummingbirds in Iowa:
Sightings of hummingbirds in Iowa peak in September, when 100 of the year's 400 verified observations are logged — about 25% of the annual total. Activity stays high through September, May and August.
The quietest stretch is January, February and March, when hummingbirds are hardest to find — no verified records exist for January. If a reliable sighting matters, plan around the peak window rather than the off-season.
The hummingbirds you are most likely to encounter in Iowa are Ruby-throated Hummingbird, Rufous Hummingbird and Mexican Violetear — the most-recorded species in the state. Each keeps its own seasonal rhythm, but the month-by-month pattern above reflects every reported sighting together.
Where to go
Best places to see hummingbirds in Iowa
- Effigy Mounds National Monument — National Monument
- Herbert Hoover National Historic Site — National Historic Site
- Lewis & Clark National Historic Trail — National Historic Trail
- Mormon Pioneer National Historic Trail — National Historic Trail
- Saylorville Reservoir (general location—use more specific hotspots)
- Red Rock Reservoir (general location—use more specific hotspots)
Gear to see them
Frequently asked questions
What is the best month to see hummingbirds in Iowa?+
September is the single best month, and the broader peak window runs through September, May and August, based on 400 verified iNaturalist observations.
When are hummingbirds hardest to see in Iowa?+
January is the quietest month for hummingbirds in Iowa, with no verified records on iNaturalist.
Are hummingbirds active year-round in Iowa?+
Hummingbirds are recorded in 8 of 12 months in Iowa, concentrated around September and May.
More places to see hummingbirds
More wildlife in Iowa