Victory Seeds®

An informational resource of the Victory Seed Company

 

Victory Heirloom Seed Company - Preserving the future, one seed at a time!

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one seed at a time." ™



• U.S. Frost Dates

• Canadian Frost Dates

• Hardiness Zone Maps

• Garden Planting Guide

• U.S. Ag Extension Links

• "Why Heirlooms?" FAQ

• "A Case for Heirlooms"

• Glossary of Terms

• Seed Saving Tips

• Vegetable Origins

• Scoville Units

• Other Useful Links

• Measurement Conversion

Average Last and First Frost Dates
for Arizona

Based on statistics, there is a 10% chance that a frost will occur outside of the dates listed and there is a 90% probability that the "Freeze Free" days are accurate. This information is based on historical data and is intended for planning purposes only.

Informational Resources for Arizona Gardeners


City Spring Fall Freeze Free
Days
Ajo 2/11 11/19 288
Flagstaff 6/23 9/11 57
Fort Valley 7/17 8/10 30
Holbrook 5/28 9/26 128
Kingman1 5/2 10/30 190
Lee's Ferry 4/23 10/23 189
Phoenix 2/9 12/9 309
Tucson 3/18 11/9 283
Yuma (Citrus Station) 3/1 11/25 286

Sources:

  1. "Climatography of the U.S. No. 20, Supplement No. 1",  1988,  National Climatic Data Center, National Oceanic and Atmospheric Administration, U.S. Department of Commerce.

  2. "DATA SET 9712C (DSI-9712C) - Probability Levels for 1971-2000 Freeze Dates and Growing Season Lengths",  26 Feb 2005, National Climatic Data Center, Asheville, NC

Click Here for more detailed information and additional weather station choices.


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Updated on April 01, 2014