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When to plant in Mendon, UT

Planting dates worked out from Mendon's own frost records, not a generic zone chart.

Last spring frost

  1. Early · riskyApr 299 years in 10 still get a later frost
  2. TypicalMay 14about half of years get a later frost
  3. Safe to plant outMay 311 year in 10 gets a later frost

Hardy crops like peas and spinach are timed from the typical date. Wait for the safe date before planting out tomatoes, peppers and squash.

First fall frost

  1. EarlySep 111 year in 10 has frost by then
  2. TypicalSep 26about half of years have had frost
  3. LateOct 109 years in 10 have had frost by then

A typical year has 135 frost-free days. Plan for tender crops to be ripe by the early date.

Station used: Logan 5 Sw Exp Farm · 8.7 km away · station 1368 m, town 1370 m. How we match towns to stations

This season

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Planting dates for common crops

CropStart indoorsPlant out or sowHarvest from
Tomato Apr 5 – Apr 19 May 31 – Jun 14 Jul 25
Sweet pepper Mar 22 – Apr 5 May 31 – Jun 14 Jul 30
Lettuce (leaf) Mar 12 – Mar 19 Apr 16 – Apr 30 May 26
Peas — Apr 3 – May 1 May 28
Bush beans — May 24 – Jun 14 Jul 13
Carrot — Apr 23 – Jun 4 Jun 22
Beet — Apr 20 – Jun 1 Jun 9
Potato — Apr 23 – May 14 Jul 2
Kale Mar 5 – Mar 19 Apr 16 – Apr 30 May 29
Broccoli Mar 5 – Mar 19 Apr 16 – May 7 Jun 15
Cucumber May 3 – May 10 May 31 – Jun 14 Jul 20
Summer squash and zucchini May 3 – May 10 May 31 – Jun 14 Jul 15
Winter squash May 3 – May 10 May 31 – Jun 14 Aug 19
Sweet corn — May 24 – Jun 14 Jul 23
Onion (from sets) — Apr 16 – May 7 Jul 15
Garlic — Sep 12 – Oct 10 (fall) following summer
Spinach — Apr 3 – May 1 May 11
Basil Apr 19 – May 3 May 31 – Jun 14 Jul 27

Plan all 65 crops for Mendon

Mendon's weather over time

How the growing season has shifted here, year by year, from the station's own records.

Apr 15May 1May 15Jun 1Jun 15 197019801990200020102020
Each year's last spring frostLong-term trend
See the data as a table
YearLast spring frost
1970May 31
1971Apr 27
1972May 11
1974Jun 8
1975May 29
1976Jun 14
1977May 20
1978Jun 1
1979Jun 1
1980May 17
1981Jun 14
1982Jun 9
1983May 14
1984May 9
1985May 13
1986May 23
1987May 4
1988May 4
1989Jun 21
1990Jun 2
1991May 19
1992May 3
1993May 9
1994Apr 30
1995Jun 7
1996May 24
1997May 3
1998Apr 27
1999May 17
2000Jun 1
2003May 20
2004May 30
2005Apr 22
2006May 11
2007May 29
2008May 13
2009May 10
2010Jun 17
2011May 30
2012May 11
2013May 4
2014May 13
2015Apr 17
2016May 11
2017May 18
2018May 2
2019May 3
2020May 8
2021May 10
2022Jun 15
2023Apr 26
2024Jun 18
2025May 19
2026May 19

What this means for you: Since 1970, Mendon's last spring frost has come about 2 days earlier per decade, on average. The frost-free season has grown by about 6 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.

Source: daily records from Logan 5 Sw Exp Farm (NOAA GHCN-Daily). Years with too many missing days are left out.

Nearby towns

WellsvilleBensonHoneyvilleLoganNibleyRiver Heights