Frost dates 2026–2027

Frost dates for Bolivar, Missouri

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Bolivar 1 NE, 1.6 mi away (close match).

Last spring frostApr 14
First fall frostOct 23
188 frost-free days
Last spring frostApr 141 year in 10 after May 2
First fall frostOct 231 year in 10 by Oct 8
Growing season188 daysbetween median 32°F dates
Hardiness zoneZone 6b−5 to 0°F average extreme low

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Will it freeze in Bolivar in the next 7 nights?

No overnight lows at or below 32°F are forecast in Bolivar during the next 7 nights in the available NWS frost forecast.

Tonight: forecast low 42°F. Above 36°F.

NWS forecast period: Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST.

2 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.

Overnight lows from the National Weather Service forecast for this location. This covers the available forecast window, not the first freeze of the whole season. Frost can form above 32°F on clear, calm nights.

Frost and freeze probabilities

Freeze dates shift from year to year. Spring percentages describe the chance of a freeze after the stated date; fall percentages describe the chance of a freeze by that date. The 10% spring date is the cautious one: a later freeze happens about 1 year in 10.

These dates describe historical probabilities, not this year’s forecast or the earliest and latest possible freezes. Different weather stations or probability thresholds can produce different published dates for the same city.

Average first hard freeze in Bolivar

The median first fall hard-freeze date (28°F) is November 1, from NOAA’s 1991–2020 Climate Normals at Bolivar 1 NE. This is the 50% probability date, not a forecast for this year.

TemperatureLast spring date
90% · 50% · 10% chance of a later freeze
First fall date
10% · 50% · 90% chance of an earlier freeze
Season
36°F frost possible Apr 10 · Apr 27 · May 12 Sep 28 · Oct 13 · Oct 26 167 days
32°F freeze Mar 29 · Apr 14 · May 2 Oct 8 · Oct 23 · Nov 4 188 days
28°F hard freeze Mar 17 · Apr 1 · Apr 18 Oct 18 · Nov 1 · Nov 16 211 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00230789. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Bolivar 1 NE

Average low temperature by month

Months with lows near or below freezing carry frost risk

Where these frost dates come from

The frost dates for Bolivar, MO come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Bolivar 1 NE (station USC00230789, elevation 987 ft), 1.6 mi from Bolivar. Local conditions (valleys, hilltops, distance to water, city heat) can shift frost dates by days or weeks. The hardiness zone is from the 2023 USDA Plant Hardiness Zone Map (USDA ARS and Oregon State University PRISM). See our methodology.

Frost dates near Bolivar

CityDistanceLast spring frostFirst fall frost
Willard, MO 22 mi Apr 9 Oct 27
Springfield, MO 29 mi Apr 4 Oct 27
Republic, MO 30 mi Apr 9 Oct 27
Marshfield, MO 33 mi Apr 13 Oct 24
Battlefield, MO 34 mi Apr 4 Oct 27
Rogersville, MO 39 mi Apr 26 Oct 13
Nixa, MO 39 mi Apr 15 Oct 23
Ozark, MO 41 mi Apr 15 Oct 23
Lebanon, MO 42 mi Apr 17 Oct 21
Aurora, MO 47 mi Apr 15 Oct 23

Frequently asked questions

When is the last frost in Bolivar?

On average, the last spring frost (32°F) in Bolivar is around April 14. In about 1 year in 10 it comes after May 2, and in 9 years in 10 it comes after March 29.

When is the first frost in Bolivar?

The first fall frost (32°F) usually arrives around October 23. There’s a 10% chance of a freeze by October 8 and a 90% chance by November 4.

Can it frost in Bolivar after the last frost date?

Yes. Frost can form on clear, calm nights even when the air stays above 32°F. Temperatures of 36°F or lower, cold enough for frost on exposed plants, have a 50% chance of occurring after April 27.

What growing zone is Bolivar?

Bolivar is in USDA Plant Hardiness Zone 6b (average annual extreme minimum temperature −5 to 0°F), based on the 2023 USDA map for ZIP code 65613. See growing zones in Missouri.

More: all Missouri frost dates · Missouri growing zones · frost vs. freeze