Your nature year
Owasso, Oklahomathrough the year
When do frost, green-up and fall color come to Owasso?
Leaves usually come out around Feb 27 and the first flowers around Mar 30. At NOAA's Tulsa International Airport station, 6.6 miles away, the average first fall frost is Nov 4 and the last spring frost Mar 31, which leaves Owasso some 218 growing days.
Head southeast for the closest of the 3 places we follow around Owasso. Sequoyah Refuge, 76 miles from Owasso, is the nearest winter wildlife spot on this site, Nov 1–Jan 31 (local timing). The town is about 685 feet above sea level.
Updated Sep 27. Sources: US Census Bureau, 2024 Gazetteer (places) ↗ (opens in a new tab), US Census Bureau, city and town population estimates, 2024 ↗ (opens in a new tab), NOAA NCEI U.S. Climate Normals 1991–2020 (annual/seasonal) ↗ (opens in a new tab)
Owasso's year at a glance
- Frost possible
- Frost-free, ~Mar 31 to ~Nov 4
- First leaf ~Feb 27
- First bloom ~Mar 30
- Today
Near Owasso right now
- First fall frost usually around Nov 4 · last spring frost around Mar 31NOAA 1991–2020 normals, Tulsa International Airport (6.6 mi, 50% dates)~5 weeks
- Winter wildlife · Sequoyah Refuge · 76 miLocal timing: Nov 1–Jan 31~5 weeks
Owasso's nature year
- Feb: Spring green-upFeb
- Mar: Last spring frostMar
- Nov: First fall frostNov
- Winter wildlife · Sequoyah RefugeNov–Jan
Nearby, season by season
Winter wildlife
- Sequoyah Refuge · 76 miLocal timing: Nov 1–Jan 31~5 weeks
- Salt Plains Refuge · 135 miLocal timing: Jan 1–Feb 28~3 months
- Flint Hills Refuge · 140 miLocal timing: their peak numbers occurring in November~5 weeks
Frost and green-up
Last spring frost
Mar 31
Average (50% date)
First fall frost
Nov 4
About 218 days without frost between
Spring green-up
Feb 27
First bloom around Mar 30
Frost: NOAA 1991–2020 climate normals at Tulsa International Airport (6.6 mi from Owasso), the day a 32 °F night is as likely as not. Green-up: the USA-NPN Spring Index, 1991–2020 average at the town.
Questions people ask
When is the first frost in Owasso?
On average around Nov 4, and the last spring frost around Mar 31: about 218 days without frost between. These are NOAA's 1991–2020 normals at Tulsa International Airport, 6.6 miles away (the day a 32 °F night is as likely as not).
When does spring green-up reach Owasso?
The USA-NPN Spring Index puts first leaf around Feb 27 and first bloom around Mar 30, on average for 1991–2020 at the town.
Where can I see winter wildlife near Owasso?
Sequoyah Refuge, 76 miles (local timing: Nov 1–Jan 31); Salt Plains Refuge, 135 miles (local timing: Jan 1–Feb 28); Flint Hills Refuge, 140 miles (local timing: their peak numbers occurring in November). Distances are straight-line.
How we know
US Census Bureau, 2024 Gazetteer (places) (opens in a new tab) (Sep 27) · US Census Bureau, city and town population estimates, 2024 (opens in a new tab) (Sep 27) · NOAA NCEI U.S. Climate Normals 1991–2020 (annual/seasonal) (opens in a new tab) (Sep 27) · USA National Phenology Network, Spring Index 1991–2020 averages (opens in a new tab) (Sep 27)