The Traverse City year in pollen
Pollen seasons in Traverse City: tree pollen March to June, grass May to July, and ragweed from mid-August until the first frost, around October 16.
First frost lands around October 16 in Traverse City — about 4 days earlier than Michigan overall — which shifts when ragweed season ends here.
When does ragweed season end in Traverse City?
Ragweed season in Traverse City typically ends with the first frost, around October 16. Some years it comes as early as October 9, some as late as October 21.
A light frost around October 16 knocks the season down; the hard freeze that finishes it usually follows by October 30. Based on 30 years of NOAA frost records (1991–2020).
The rest of the Traverse City pollen year
| Allergen | Typical season |
|---|---|
| Birch | April to May |
| Oak | April to June |
| Maple | March to May |
| Alder | March to April |
| Ash | April to May |
| Pine | May to June |
| Grass | May to July |
Season-by-season detail is on the Michigan page.
Nearby calendars
Frost dates for Traverse City come from the Traverse City Cherry Cptl Airport weather station's 30-year records. Season windows reviewed August 2026.