Last Frost Date St. George: Frost Dates, Late Frost Risk & Growing Season

When is the last spring frost and the first autumn frost in St. George? Frost dates from 30 years of data, the risk of late frost, frost-free days and planting dates.

The frost season in St. George

Last frost (average): March 26
In 1 year out of 10 it still freezes on April 18.
First frost: November 6
Frost-free season: 229 days
Frost after 15 May: in 0 % of years

Frost days per month in St. George

January: 18.3 · -1 °C
February: 12.4 · 1 °C
March: 6.1 · 4 °C
April: 1 · 7 °C
May: 0 · 12 °C
June: 0 · 18 °C
July: 0 · 22 °C
August: 0 · 21 °C
September: 0 · 17 °C
October: 0.7 · 10 °C
November: 7.2 · 3 °C
December: 18.8 · -1 °C

No weather station nearby: plain grid values, which are often a little too cold – dates may therefore be late.
Daily minimum temperatures 2 m above ground over 30 years (1991–2020), NASA POWER; station data: Deutscher Wetterdienst (CC BY 4.0). Ground frost can form while the air at 2 m is still +2 to +3 °C.