Best Time to See Great Blue Herons in Missouri
May, April and June is the best time to see great blue herons in Missouri. Based on 2,218 verified iNaturalist observations, here is exactly when great blue herons are most active across the year in Missouri.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated July 20, 2026.
Great Blue Heron · Public domain CC0
Great Blue Heron · florawhite CC BY
Great Blue Heron · florawhite CC BY
2,218 verified observations of great blue herons in Missouri, recorded across 12 months of the year on iNaturalist.
When great blue herons are recorded in Missouri
Peak month
May
404 records (18.2% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 77 | 3.5% |
| February | 62 | 2.8% |
| March | 127 | 5.7% |
| Aprilpeak | 327 | 14.7% |
| Maypeak | 404 | 18.2% |
| Junepeak | 295 | 13.3% |
| July | 219 | 9.9% |
| August | 213 | 9.6% |
| September | 169 | 7.6% |
| October | 131 | 5.9% |
| November | 115 | 5.2% |
| December | 79 | 3.6% |
Great Blue Herons you are most likely to see
| Species | Verified observations |
|---|---|
| Great Blue Heron | 2,218 |
Weather to expect, source Open-Meteo
Typical weather in Missouri
Recent typical conditions by month, so you can plan a trip around both when great blue herons are active and what the weather is doing. The best months to look for great blue herons sit around 45 to 86 degrees Fahrenheit, so pack for that.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 43°F | 27°F | 3" |
| Feb | 45°F | 25°F | 3.2" |
| Mar | 57°F | 37°F | 5.6" |
| Aprbest time | 67°F | 45°F | 4.7" |
| Maybest time | 74°F | 56°F | 5.9" |
| Junbest time | 86°F | 65°F | 4.3" |
| Jul | 90°F | 70°F | 4.2" |
| Aug | 88°F | 69°F | 5.1" |
| Sep | 84°F | 63°F | 2.2" |
| Oct | 68°F | 49°F | 5" |
| Nov | 57°F | 38°F | 2.1" |
| Dec | 50°F | 32°F | 2.1" |
Typical recent conditions (5-year means) from the Open-Meteo archive, averaged for Missouri. Weather varies year to year, so treat these as a guide.
Sightings of great blue herons in Missouri peak in May, when 404 of the year's 2,218 verified observations are logged — about 18.2% of the annual total. Activity stays high through May, April and June.
The quietest stretch is February, January and December, when great blue herons are hardest to find — February sees just 62 records. If a reliable sighting matters, plan around the peak window rather than the off-season.
The great blue herons you are most likely to encounter in Missouri are Great Blue Heron — 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 blue herons in Missouri
- George Washington Carver National Monument — National Monument
- Lewis & Clark National Historic Trail — National Historic Trail
- Ozark National Scenic Riverways — National Scenic Riverways
- Ulysses S Grant National Historic Site — National Historic Site
- Wilson's Creek National Battlefield — National Battlefield
- Butterfield Overland National Historic Trail — National Historic Trail
Frequently asked questions
What is the best month to see great blue herons in Missouri?+
May is the single best month, and the broader peak window runs through May, April and June, based on 2,218 verified iNaturalist observations.
When are great blue herons hardest to see in Missouri?+
February is the quietest month for great blue herons in Missouri, with only 62 verified records.
Are great blue herons active year-round in Missouri?+
Great blue herons are recorded in 12 of 12 months in Missouri, so they can be seen year-round, with a clear peak in May.
More wildlife in Missouri