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"Preserving the future,
one seed at a time." ™
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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:
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"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.
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"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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