The Lawton year in pollen
Pollen seasons in Lawton: tree pollen February to May, grass May to August, and ragweed from early August until the first frost, around November 5.
Tree pollen
Grass
Ragweed
When does ragweed season end in Lawton?
Ragweed season in Lawton typically ends with the first frost, around November 5. Some years it comes as early as October 31, some as late as November 11.
A light frost around November 5 knocks the season down; the hard freeze that finishes it usually follows by November 14. Based on 30 years of NOAA frost records (1991–2020).
The rest of the Lawton pollen year
| Allergen | Typical season |
|---|---|
| Eastern red cedar | February to April |
| Elm | February to April |
| Maple | March to April |
| Oak | April to May |
| Cottonwood | April to May |
| Grass | May to August |
Season-by-season detail is on the Oklahoma page.
Nearby calendars
Frost dates for Lawton come from the Lawton Municipal Airport weather station's 30-year records. Season windows reviewed August 2026.