When is the last frost in Monteview, ID?

For ZIP code 83435, the average last spring frost (32°F) is June 12, based on NOAA 1991-2020 climate normals for the Monteview, ID weather station. There is a 1-in-10 chance of a frost after June 30.

When is the first frost in Monteview, ID?

The average first fall frost (32°F) is September 7. There is a 1-in-10 chance of frost by August 25, so tender plants are at risk from that point on.

How long is the growing season in 83435?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 87 days long.

Are these frost dates a forecast?

No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.

Frost dates for 83435Monteview, ID

The average last spring frost in Monteview is June 12 and the average first fall frost is September 7, giving a typical growing season of about 87 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Jun 12
Average first fall frost: Sep 7
Growing season: 87 days

Frost risk by date

NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.

Spring dates: chance of a frost AFTER the date. Fall dates: chance of a frost BEFORE the date.
Temperature	Last spring: 90% / 50% / 10% chance	First fall: 10% / 50% / 90% chance	Growing season (50%)	Years with at least one
Light frost (36°F)	—	—	62 days	100%
Frost / freeze (32°F)	May 21 · Jun 12 · Jun 30	Aug 25 · Sep 7 · Sep 21	87 days	100%
Hard freeze (28°F)	May 2 · May 18 · Jun 11	Sep 3 · Sep 19 · Oct 4	121 days	100%

Where these dates come from

ZIP code 83435 is matched to the NOAA station Monteview, ID, 5 km away, at 4,815 ft elevation (22 ft higher than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Monteview, ID (used)	4,815 ft	Jun 12	Sep 7
Hamer 4 Nw, ID	4,790 ft	Jun 3	Sep 11
Small 6N, ID	5,740 ft	Jun 5	Sep 20
Howe, ID	4,820 ft	May 24	Sep 14

Frost dates near Monteview

Terreton, ID 83450 · last Jun 3, first Sep 11
Dubois, ID 83423 · last May 18, first Sep 30
Hamer, ID 83425 · last Jun 3, first Sep 11
Howe, ID 83244 · last May 24, first Sep 14
Roberts, ID 83444 · last May 23, first Sep 20
Spencer, ID 83446 · last May 18, first Sep 30
Menan, ID 83434 · last May 15, first Sep 23
Lewisville, ID 83431 · last May 9, first Oct 1

Frequently asked questions

When is the last frost in Monteview, ID?: For ZIP code 83435, the average last spring frost (32°F) is June 12, based on NOAA 1991-2020 climate normals for the Monteview, ID weather station. There is a 1-in-10 chance of a frost after June 30.
When is the first frost in Monteview, ID?: The average first fall frost (32°F) is September 7. There is a 1-in-10 chance of frost by August 25, so tender plants are at risk from that point on.
How long is the growing season in 83435?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 87 days long.
Are these frost dates a forecast?: No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.