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Initial and Final Date of Freezing Temperatures and Annual U.S. Precipitation

Below you will find an assortment of U.S. climate maps that should prove helpful in planning a wide variety of activities.

Maps include:
* The mean date of last freezing temperature (useful for planning spring planting).
* The mean date of first freezing temperature at the end of the growing season.
* The median length of freeze-free period.
* The total annual precipitation in inches.


Gardening
You'll need to take a number of weather factors into consideration:
* The average last date of frost in spring.
* The average first date of frost in autumn.
* The number of frost-free days you can expect during the growing season.
* The average rainfall amount for your area.

The following maps should be of use whether you're trying to determine the optimum time to plant a garden, the best time to harvest your vegetables, or would like to determine if your area offers adequate rainfall or a sufficient growing season for certain plants, fruits or vegetables you'd like to try.


Be sure and visit our page of plant hardiness zone maps to ensure the garden vegetables, fruits and trees you choose are suitable for your local climate.


Map showing the mean last date of 32-degree temperature (last freeze)

Mean date of last freezing temperature - Useful for planning spring planting
Mean Date of Last 32 degree temperature of Spring Planting

WARNING: Freezing temps can and occasionally do occur after the above dates. Plan accordingly and be prepared to protect your plants or seedlings from frost.


Map showing the mean date of the first 32-degree temperature (first freeze)

Mean date of first freezing temperature at the end of the growing season
Mean date of first freezing temperature at the end of the growing season

WARNING: Freezing temps can and occasionally do occur before the above dates. Plan accordingly by being prepared to either protect your plants, fruits and vegetables from an early frost, or harvest them early, if you prefer.


U.S. map showing median length of freeze-free period

Median length of freeze-free period in the United States
U.S. map showing median length of freeze-free period

WARNING: There are occasionally years when the freeze-free period is substantially shorter than indicated on the above map. Be sure you are prepared to protect your plants and vegetables from both late-season frost and an early arrival of freezing temperatures.


U.S. map showing annual precipitation in inches

Mean total precipitation in the United States
U.S. map showing annual precipitation in inches

WARNING: There are occasionally years when the amount of precipitation that falls is either substantially lower or higher than indicated on the above map. Take this into consideration if you lack irrigation.


If you find the above data useful, please link to this page from your webpage, blog or website. Alternatively, consider recommending us to your friends and colleagues. Thank you in advance!

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