Frost Dates

In Baker County and Areas

The average dates are established at the 50% level or half the times the frost may occur before or after that date. The safe date is when there is less than a 10% chance the frost will be after (for last frost) or that it will occur before (the first frost). You certainly will have your own little micro-climates around your landscape to modify your planting times. You can always use season extenders to modify these areas. These techniques are not limited to greenhouses or row covers. 

 

Location 

Last Frost (Date)

First Frost (Date)

Growing Season (Days)

 

Average

Safe

Average

Safe

Average

Safe

Baker Airport  

6/3

6/29

9/7

8/26

95

64

Baker Area  

5/30

6/20

9/22

9/8

115

89

Halfway  

6/11

7/3

9/10

8/28

90

64

Huntington  

4/30

5/17

10/9

9/22

161

137

La Grande  

5/17

6/11

9/26

9/9

130

98

Ontario  

5/12

6/3

9/28

9/14

139

108

Richland  

5/22

6/12

9/26

10/8

126

94

Union  

5/24

6/12

9/17

9/2

116

94

Vale  

5/13

6/2

9/30

9/16

139

114

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