Best Time to See Tree Frogs in Washington
August, April and May is the best time to see tree frogs in Washington. Based on 13,399 verified iNaturalist observations, here is exactly when tree frogs are most active across the year in Washington.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 28, 2026.
Pacific chorus frog · brentnmoran CC BY-SA
Pacific chorus frog · Matthew Gilbert Koons CC BY-ND
Pacific chorus frog · Gavin Slater CC BY
13,399 verified observations of tree frogs in Washington, recorded across 12 months of the year on iNaturalist.
When tree frogs are recorded in Washington
Peak month
August
2,238 records (16.7% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 152 | 1.1% |
| February | 361 | 2.7% |
| March | 1,517 | 11.3% |
| Aprilpeak | 2,052 | 15.3% |
| Maypeak | 1,608 | 12% |
| June | 1,317 | 9.8% |
| July | 1,236 | 9.2% |
| Augustpeak | 2,238 | 16.7% |
| September | 1,602 | 12% |
| October | 948 | 7.1% |
| November | 270 | 2% |
| December | 98 | 0.7% |
Tree Frogs you are most likely to see
| Species | Verified observations |
|---|---|
| Pacific chorus frog | 13,359 |
| Cuban Tree Frog | 1 |
Weather to expect, source Open-Meteo
Typical weather in Washington
Recent typical conditions by month, so you can plan a trip around both when tree frogs are active and what the weather is doing. The best months to look for tree frogs sit around 33 to 86 degrees Fahrenheit, so pack for that.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 35°F | 24°F | 4.5" |
| Feb | 36°F | 22°F | 2.8" |
| Mar | 46°F | 28°F | 1.2" |
| Aprbest time | 56°F | 33°F | 1.3" |
| Maybest time | 67°F | 44°F | 1.2" |
| Jun | 76°F | 51°F | 0.9" |
| Jul | 86°F | 57°F | 0.2" |
| Augbest time | 86°F | 58°F | 0.3" |
| Sep | 74°F | 50°F | 1.1" |
| Oct | 59°F | 39°F | 1.7" |
| Nov | 42°F | 29°F | 3.6" |
| Dec | 33°F | 23°F | 3.6" |
Typical recent conditions (5-year means) from the Open-Meteo archive, averaged for Washington. Weather varies year to year, so treat these as a guide.
More on tree frogs in Washington:
Sightings of tree frogs in Washington peak in August, when 2,238 of the year's 13,399 verified observations are logged — about 16.7% of the annual total. Activity stays high through August, April and May.
The quietest stretch is December, when tree frogs are hardest to find — December sees just 98 records. If a reliable sighting matters, plan around the peak window rather than the off-season.
The tree frogs you are most likely to encounter in Washington are Pacific chorus frog and Cuban Tree Frog — 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 tree frogs in Washington
- Ebey's Landing National Historical Reserve — National Historical Reserve
- Fort Vancouver National Historic Site — National Historic Site
- Lewis & Clark National Historic Trail — National Historic Trail
- Lewis and Clark National Historical Park — National Historical Park
- Mount Rainier National Park — National Park
- Nez Perce National Historical Park — National Historical Park
Frequently asked questions
What is the best month to see tree frogs in Washington?+
August is the single best month, and the broader peak window runs through August, April and May, based on 13,399 verified iNaturalist observations.
When are tree frogs hardest to see in Washington?+
December is the quietest month for tree frogs in Washington, with only 98 verified records.
Are tree frogs active year-round in Washington?+
Tree frogs are recorded in 12 of 12 months in Washington, so they can be seen year-round, with a clear peak in August.
More places to see tree frogs
More wildlife in Washington