Best Time to See Great Horned Owls in Iowa
July, April and September is the best time to see great horned owls in Iowa. Based on 182 verified iNaturalist observations, here is exactly when great horned owls 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 July 20, 2026.
Great Horned Owl · Isaac Winkler CC BY
Great Horned Owl · Isaac Winkler CC BY
Great Horned Owl · Public domain CC0
182 verified observations of great horned owls in Iowa, recorded across 12 months of the year on iNaturalist.
When great horned owls are recorded in Iowa
Peak month
July
26 records (14.3% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 17 | 9.3% |
| February | 8 | 4.4% |
| March | 12 | 6.6% |
| Aprilpeak | 25 | 13.7% |
| May | 17 | 9.3% |
| June | 11 | 6% |
| Julypeak | 26 | 14.3% |
| August | 15 | 8.2% |
| Septemberpeak | 18 | 9.9% |
| October | 13 | 7.1% |
| November | 10 | 5.5% |
| December | 10 | 5.5% |
Great Horned Owls you are most likely to see
| Species | Verified observations |
|---|---|
| Great Horned Owl | 182 |
Weather to expect, source Open-Meteo
Typical weather in Iowa
Recent typical conditions by month, so you can plan a trip around both when great horned owls are active and what the weather is doing. The best months to look for great horned owls sit around 39 to 84 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" |
| Aprbest time | 60°F | 39°F | 2.5" |
| May | 70°F | 52°F | 5.3" |
| Jun | 82°F | 63°F | 4.1" |
| Julbest time | 84°F | 67°F | 3.6" |
| Aug | 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.
Sightings of great horned owls in Iowa peak in July, when 26 of the year's 182 verified observations are logged — about 14.3% of the annual total. Activity stays high through July, April and September.
The quietest stretch is February, November and December, when great horned owls are hardest to find — February sees just 8 records. If a reliable sighting matters, plan around the peak window rather than the off-season.
The great horned owls you are most likely to encounter in Iowa are Great Horned Owl — 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 great horned owls 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)
Frequently asked questions
What is the best month to see great horned owls in Iowa?+
July is the single best month, and the broader peak window runs through July, April and September, based on 182 verified iNaturalist observations.
When are great horned owls hardest to see in Iowa?+
February is the quietest month for great horned owls in Iowa, with only 8 verified records.
Are great horned owls active year-round in Iowa?+
Great horned owls are recorded in 12 of 12 months in Iowa, so they can be seen year-round, with a clear peak in July.
More wildlife in Iowa