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First and last freeze dates in Jamestown, ND

The first freeze of fall (a low of 32°F or colder) typically comes around Sep 29, and the last freeze of spring around May 11.

This fall so far (data through Oct 16, 2026): first freeze (32°F or colder) Oct 2 at this station. Observed data, can lag a day or two.

Sep 29Median first fall freeze (≤32°F)

May 11Median last spring freeze (≤32°F)

144Median freeze-free days between

First and last freeze dates in Jamestown

Threshold	Event	Median date	Typical range (10th–90th pct)	Earliest / latest	Years with one
32°F or colder (freeze)	First in fall	Sep 29	Sep 20 – Oct 13	Sep 8 (2020) / Oct 22 (2007)	100%
32°F or colder (freeze)	Last in spring	May 11	Apr 24 – May 20	–	100%
28°F or colder (hard freeze)	First in fall	Oct 9	Sep 25 – Oct 21	Sep 21 (1995) / Oct 24 (2007)	100%
28°F or colder (hard freeze)	Last in spring	Apr 29	Apr 18 – May 15	–	100%

Based on the station’s daily minimum temperature, 1995–2024. “Freeze” here means a daily low at or below the threshold, which is not the same as visible frost. Your yard can differ by several degrees and days from an airport weather station, so use these as planning odds, not guarantees.

The median stretch between the last spring freeze and the first fall freeze (the freeze-free season) was about 144 days.

Nearby weather stations

Source station: Jamestown Muni Ap (USW00014919), elevation 1,495 ft. Data: NOAA NCEI GHCN-Daily. Computed by First Snow Dates; how we calculate this. Historical averages only; for a forecast see weather.gov.

Planning for winter? Heat pump vs gas furnace, propane and oil: heating cost in North Dakota (on our sister site PlugVsPump, from EIA prices).