Location and climatic information at various sites in Cochise County

Location

Lat

Long

Elev

in

feet

Years

Precip

in

inches

Mean temperatures

Extreme temperatures

Frost

Growing Season

in

days

max

min

avg

max

min

last

first

Benson

31E 58'

110E18'

3585

41

10.4

80.7

44.7

64.2

113

5

3/27

11/8

226

Bonita*

32E27'

105E55W

4415

10

14.0

77.8

44.1

60.8

111

3

4/18

10/27

192

Bowie

32E20'

109E29'

3756

41

10.0

81.1

47.6

63.7

116

10

3/26

11/8

227

Cochise

31E54'

109E50'

4219

12

11.7

76.8

43.4

61.2

113

-4

4/3

11/7

218

Douglas

31E20'

109E35'

3973

29

11.8

79.5

46.7

63.1

107

8

4/8

11/6

216

Pearce

31E 54'

109E49'

4420

20

12.1

78.4

45.0

61.8

109

4

4/19

11/5

200

San Simon

32E22'

109E08'

3608

21

8.8

80.0

43.8

61.9

110

2

4/16

10/27

194

Willcox

32E18'

109E51

4167

41

11.2

77.7

40.5

59.1

109

-1

4/27

10/28

184

Average

 

 

 

4018

 

11.3

79.0

44.5

62.0

111

3.4

 

 

 

209

*From AZMET station

The following table shows monthly average maximum, minimum and mean temperatures and rainfall for four sites in the county along with heat units (HU) for Willcox and Sunsites and evapotranspiration (Eto) data for Bonita. The rainfall data shows that most of the county receives about half of the year=s moisture in the monsoon season ( July, August and September) and 17 to 37 percent of the rainfall during the winter rains (December through March). Evapotranspiration (Eto) is shown to be 71.2 inches of water at Bonita, that correlates well with an estimated water evaporation for the county of 67 inches per year. Heat units (HU) are related to hours of time within specified maximum and minimum threshold temperatures. A plant needs a certain number of heat units to germinate and grow.

Monthly temperature, rainfall and heat units from National Weather Service data at
Willcox, Pearce, Douglas and Bonita

 

 

 Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

ave/
Tot

Willcox

Ave Max T

58.0

63.0

68.0

78.0

86.0

95.0

95.0

92.0

90.0

80.0

68.0

59.0

78

Ave 
Min T

25.0

27.0

31.0

37.0

43.0

52.0

63.0

60.0

53.0

41.0

30.0

25.0

41

Ave T

41.5

45.0

49.5

57.5

64.5

73.5

79.0

76.0

71.5

60.5

49.0

42.0

59.1

Rain

0.1

0.1

0.6

0.3

0.1

0.4

2.6

2.7

1.2

0.6

0.4

1.0

11.2

HU 86/55EF

38.8

63.0

121.8

219.4

362.0

499.3

666.0

635.5

496.3

310.0

128.6

57.6

3497

Pearce

Ave Max T

60.0

62.0

66.0

83.0

85.0

94.0

94.0

91.0

88.0

80.0

71.0

61.0

78

Ave 
Min T

30.0

31.0

36.0

43.0

49.0

57.0

64.0

62.0

57.0

46.0

35.0

29.0

45

Ave T

45.0

46.5

51.0

63.0

67.0

75.5

79.0

76.5

72.5

63.0

53.0

45.0

61.5

Rain

0.7

0.7

0.6

0.2

0.2

0.5

3.0

3.2

1.1

0.6

0.4

0.1

12.1

HU 86/55EF

58.6

79.0

140.6

243.4

399.7

561.4

685.5

642.1

522.0

346.5

155.4

68.2

3902

Douglas

Ave Max T

61.7

66.1

70.6

79.4

87.3

95.5

94.6

92.3

90.1

82.1

71.0

63.4

79.5

Ave
 Min T

29.6

32.0

36.8

43.7

50.5

60.2

67.4

66.0

59.7

48.0

36.0

30.2

46.7

Ave T

45.7

49.1

53.7

61.6

68.9

77.9

81.0

79.2

74.9

65.1

53.5

46.8

63.1

Rain

0.7

0.4

0.6

0.2

0.1

0.4

3.6

3.1

1.2

0.6

0.4

0.7

11.82

Bonita

Ave Max T

56.7

61.6

66.7

76.1

82.7

94.0

93.9

90.5

87.3

79.7

66.1

57.3

77.8

Ave 
Min T

27.9

31.8

33.9

38.6

45.8

54.3

61.7

62.4

54.0

43.6

31.7

27.7

44.1

Ave T

41.3

46.2

50.6

58.6

64.7

75.7

77.4

74.9

70.0

60.8

48.0

41.4

60.8

Rain

1.5

1.1

0.9

0.2

0.6

0.1

1.6

3.4

0.8

1.3

0.8

1.7

14

Eto

2.5

3.3

5.5

7.7

9.1

10.1

8.7

7.0

6.4

5.2

3.4

2.3

71.2

* The Bonita site is located in Graham County.

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