Last Frost Date Fargo: Frost Dates, Late Frost Risk & Growing Season

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

The frost season in Fargo

• Last frost (average): May 6
• In 1 year out of 10 it still freezes on May 16.
• First frost: October 4
• Frost-free season: 150 days
• Frost after 15 May: in 13 % of years

Frost days per month in Fargo

• January: 30.9 · -18 °C
• February: 28.1 · -15 °C
• March: 28.5 · -7 °C
• April: 15.6 · 0 °C
• May: 2.2 · 7 °C
• June: 0 · 13 °C
• July: 0 · 15 °C
• August: 0 · 14 °C
• September: 0.5 · 9 °C
• October: 11.4 · 2 °C
• November: 26.7 · -6 °C
• December: 31 · -13 °C

• Matched to the average lows of a weather station 2 km away – accurate to about ±1–2 weeks.
• 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.

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