State

City

Latitude

Longitude

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Year Avg

AL

Birming han

33' 34" N

86' 45" W

2.29

3.31

4.04

5.14

5.92

5.98

5.81

5.7

4.8

3.93

2.96

2.25

4.34

AK

Anchorage

61' 10" N

150' 1" W

0.21

0.76

1.68

3.12

3.98

4.58

4.25

3.16

1.98

0.98

0.37

0.12

2.09

AR

little rock

32' 25" N

94' 44" W

2.36

3.39

4.01

5.32

5.71

6.19

6.15

5.85

5.25

4.17

2.95

2.25

4.46

AZ

Phoenix

33 ' 26" N

112' 1" W

3.25

4.41

5.17

6.76

7.42

7.7

6.99

6.11

6.02

4.44

3.52

2.75

5.38

CA

Los Angeles

34' N

118' W

3.09

4.25

5.09

6.58

7.29

7.62

7.45

6.72

6.11

4.42

3.43

2.72

5.40

CA

San Francisco

38' 31" N

121' 30" W

2.35

3.33

4.42

5.95

6.84

7.39

7.55

6.51

5.75

3.92

2.65

2.06

4.89

CO

Denver

39' 45" N

104' 52" W

2.25

3.2

4.32

5.61

6.11

6.71

6.5

5.86

5.47

4.01

2.59

1.98

4.55

CT

Hartford

41' 44" N

72' 39" W

1.7

2.43

3.48

4.07

5.14

5.58

5.38

5.04

4.13

2.91

1.81

1.42

3.59

DE

Dover

39' 8" N

75' 28" W

1.85

2.62

3.6

4.33

5.44

5.91

5.64

5.3

4.38

3.23

2.21

1.66

3.84

FL

Miami

25' 48" N

80' 16" W

3.72

4.61

5.42

6.4

6.61

6.29

6.26

6.08

5.47

4.84

3.96

3.46

5.26

GA

Atlanta

33' 39" N

84' 26" W

2.31

3.37

4.08

5.2

6.02

6.01

5.81

5.59

4.76

3.95

2.98

2.33

4.37

HI

Honolulu

21' 20" N

157' 55" W

4.38

5.15

5.99

6.69

7.05

7.48

7.37

7.07

6.51

5.46

4.41

4.01

5.96

IA

Dubuque

42' 24" N

90' 42" W

1.64

2.58

3.34

4.57

5.54

6.06

5.81

5.26

4.33

3.03

1.72

1.35

3.77

ID

Boise

43' 34" N

116' 13" W

1.73

2.72

3.77

5.22

5.9

6.57

7.17

6.12

5.28

3.29

1.74

1.46

4.24

IN

Indianapolis

39' 44" N

86' 17" W

1.67

2.59

3.28

4.67

5.46

6.11

5.79

5.37

4.76

3.33

1.97

1.46

3.87

IL

Chicago

41' 53" N

87' 38" W

1.5

2.45

3.2

4.48

5.56

6.07

5.68

5.27

4.51

3.07

1.69

1.26

3.72

KS

Kansas City

39' 12" N

94' 36" W

2.06

2.89

3.62

4.92

5.58

6.17

6.21

5.59

4.9

3.49

2.2

1.75

4.11

KY

Louisville

38' 11" N

85' 44" W

1.71

2.65

3.32

4.73

5.38

6.08

5.79

5.35

4.8

3.42

2.1

1.56

3.9

LA

New Orleans

29' 37" N

90' 5" W

2.64

3.73

4.67

5.8

6.6

6.15

6.09

5.7

5.13

4.48

3.49

2.68

4.76

MA

Boston

42' 22" N

71' 2" W

1.66

2.5

3.51

4.13

5.11

5.47

5.44

5.05

4.12

2.84

1.74

1.4

3.58

MD

Annapolis

38' 35" N

76' 21" W

1.96

2.8

3.71

4.55

5.54

6.03

5.77

5.34

4.48

3.4

2.37

1.81

3.98

ME

Portland

45' 36" N

122' 36" W

1.38

2.33

3.49

4.57

5.46

6.09

6.64

5.78

4.8

2.79

1.41

1.1

3.82

MI

Detroit

42' 25" N

83' 1" W

1.43

2.33

3.19

4.34

5.44

5.98

5.64

4.99

4.25

2.73

1.52

1.14

3.58

MO

St.Louis

38' 45" N

90' 23" W

2.02

2.82

3.52

4.97

5.56

6.21

6.05

5.63

4.91

3.55

2.21

1.73

4.09

MN

Minneapolis

44' 53" N

93' 13" W

1.6

2.61

3.3

4.55

5.44

5.86

5.77

5.12

4.12

2.9

1.62

1.34

3.68

MS

Jackson

42' 16" N

84' 28" W

1.47

2.41

3.22

4.33

5.46

5.93

5.57

4.99

4.3

2.78

1.55

1.17

3.59

MT

Billings

45' 48" N

108' 32" W

1.55

2.57

3.52

4.82

5.63

6.45

6.39

5.75

4.67

3.19

1.77

1.3

3.96

MT

Great Falls

43' 33" N

96' 42" W

1.3

2.36

3.41

4.84

5.56

6.18

6.44

5.53

4.4

2.9

1.53

1.11

3.79

NC

Charlotte

35' 13" N

80' 56" W

2.22

3.17

3.95

4.98

5.8

6.01

5.76

5.27

4.58

3.75

2.76

2.21

4.2

ND

Fargo

46' 54" N

96' 48" W

1.44

2.39

3.36

4.79

5.62

5.82

5.94

5.14

4.01

2.83

1.59

1.31

3.68

NE

Omaha

41' 18" N

95' 54" W

1.92

2.76

3.45

4.74

5.6

6.14

6.11

5.46

4.74

3.34

2

1.57

3.98

NH

Manchester

42' 56" N

71' 26" W

1.66

2.5

3.51

4.13

5.11

5.47

5.44

5.05

4.12

2.84

1.74

1.4

3.58

NJ

Trenton

40' 13" N

74' 46" W

1.71

2.39

3.43

4.04

5.26

5.67

5.39

5.14

4.18

3

1.98

1.48

3.63

NM

Albuquerque

35' 3" N

106' 37" W

2.92

3.97

4.92

6.3

6.68

6.94

6.66

5.8

5.68

4.18

3.16

2.5

4.97

NV

Las Vegas

36' 18" N

115' 16" W

3.02

4.13

5.05

6.57

7.25

7.69

7.37

6.42

6.08

4.26

3.18

2.6

5.3

NY

New York

41' N

74' W

1.67

2.37

3.41

3.93

5.11

5.48

5.26

5.01

4.05

2.85

1.82

1.4

3.53

OH

Columbus

39' 16" N

85' 54" W

1.64

2.57

3.26

4.63

5.4

6.08

5.73

5.29

4.74

3.29

1.96

1.45

3.83

OK

Tulsa

36' 12" N

95' 54" W

2.33

3.22

3.9

5.25

5.58

6.32

6.4

5.8

5.08

3.8

2.62

2.06

4.36

OR

Portland

45' 32" N

122' 40" W

1.38

2.33

3.49

4.57

5.46

6.09

6.64

5.78

4.8

2.79

1.41

1.1

3.82

PA

Philadelphia

39' 53" N

75' 15" W

1.85

2.62

3.6

4.33

5.44

5.91

5.64

5.3

4.38

3.23

2.21

1.66

3.84

PA

Pittsburgh

40' 27" N

79' 57" W

1.59

2.4

3.26

4.07

5.05

5.53

5.27

4.94

4.05

2.88

1.86

1.41

3.53

RI

Providence

41' 44" N

71' 26" W

1.7

2.46

3.53

4.2

5.17

5.67

5.48

5.08

4.21

2.97

1.8

1.43

3.64

SC

Columbia

38' 58" N

92' 22" W

2.14

2.91

3.62

5.03

5.56

6.22

6.13

5.64

4.95

3.57

2.25

1.82

4.15

SD

Sioux Falls

45' 27" N

98' 25" W

1.72

2.71

3.31

4.65

5.61

6.1

6.04

5.42

4.47

3.2

1.78

1.43

3.87

TN

Nashville

36' 7" N

86' 41" W

1.94

2.9

3.54

4.76

5.57

5.9

5.86

5.62

4.63

3.53

2.45

1.82

4.04

TX

San Antonio

29' 32" N

98' 28" W

2.57

3.7

4.43

5.54

5.94

6.62

6.49

6.28

5.7

4.67

3.43

2.62

4.83

TX

Houston

29' 59" N

95' 22" W

2.47

3.5

4.4

5.59

6.03

6.45

6.36

6.07

5.46

4.61

3.3

2.44

4.72

UT

Salt Lake City

40' 46" N

111" 52" W

2.23

3.15

4.09

5.57

6.26

6.98

6.86

5.98

5.39

3.68

2.29

1.97

4.53

VA

Washington

38' 51" N

77' 2" W

1.95

2.8

3.66

4.46

5.42

5.88

5.63

5.22

4.38

3.36

2.34

1.79

3.9

VT

Montpelier

44' 16" N

72' 35" W

1.58

2.54

3.5

4.05

5

5.24

5.37

4.92

3.79

2.46

1.52

1.28

3.43

WA

Seattle

47' 32" N

122' 18" W

1.14

2.04

3.23

4.26

5.19

5.75

6.27

5.46

4.43

2.5

1.21

0.9

3.53

WI

Milwaukee

42' 57" N

87' 54" W

1.43

2.41

3.29

4.48

5.6

6.09

5.74

5.21

4.34

2.9

1.6

1.2

3.69

WV

Charleston

38' 22" N

81' 36" W

1.75

2.64

3.34

4.26

5.2

5.67

5.49

5.19

4.26

3.19

2.15

1.62

3.73

WY

Casper

42' 55" N

106' 28" W

1.93

2.8

3.79

5.13

5.9

6.68

6.5

5.9

5.13

3.59

2.06

1.65

4.25