Climate Information for Places With Some of the Best May Weather in the USA

This page pulls together detailed temperature and rainfall information for the list that describes 30 places in the United States with fabulous May weather.

Here you can easily compare May maximum and minimum temperatures in degrees Fahrenheit and Celsius. Plus there's information on how many days normally have highs in the 60s, 70s and 80s °F.

The final table gives the average amount of rain each place receives this month, measured in inches and millimetres. There are also totals for the number of days with wet weather.

All the numbers are long-term averages based on weather data collected from 1981 to 2010 by the US National Climatic Data Center.

Temperature

Average May temperatures
High °F Low °F Place High °C Low °C
82 71 Dauphin Island, AL 28 22
72 40 Pinetop - Lakeside, AZ 22 5
77 53 Mammoth Spring, AR 25 12
68 51 Oakland, CA 20 11
72 49 Santa Cruz, CA 22 9
73 37 Durango, CO 23 3
77 56 Gainesville, GA 25 14
85 70 Waikiki, HI 29 21
74 54 Windsor, IL 24 12
71 49 Decatur, IN 22 10
72 52 Des Moines, IA 22 11
74 54 John Redmond Lake, KS 24 12
77 51 Buckhorn, KY 25 11
83 70 Boothville, LA 28 21
74 51 Frederick, MD 23 11
70 53 Ocean City, MD 21 12
82 63 Grand Bay Wildlife Refuge, MS 28 17
74 53 Potosi, MO 23 12
74 45 Lake McConaughy, NE 23 7
74 40 Ruidoso, NM 23 5
70 49 Patchogue, NY 21 9
75 53 Asheville, NC 24 12
74 61 Ocracoke Island, NC 23 16
67 43 Bismarck, ND 20 6
73 52 Columbus, OH 23 11
68 49 Beaverton, OR 20 9
72 48 Umatilla, OR 22 9
78 53 Kingsport, TN 26 12
82 71 Galveston, TX 28 21
75 51 Lynchburg, VA 24 11

This next table lists the number of days in May that typically have highs in the 60s, 70s or 80s Fahrenheit. Highs of 60 to 69 °F equal 15.6 to 21.0 °C. Highs of 70 to 79 °F equal 21.1 to 26.6 °C. Highs of 80 to 89 °F equal 26.7 to 32.1 °C. Any days not included in these categories have highs of less than 60 °F.

Average number of days in May with a maximum temperature in the 60s, 70s or 80s °F
Place 60s 70s 80s
Dauphin Island, AL 0 10 21
Pinetop - Lakeside, AZ 8 17 4
Mammoth Spring, AR 5 13 13
Oakland, CA 22 6 2
Santa Cruz, CA 12 15 3
Durango, CO 9 14 6
Gainesville, GA 4 15 12
Waikiki, HI 0 1 30
Windsor, IL 8 13 8
Decatur, IN 13 11 5
Des Moines, IA 9 12 7
John Redmond Lake, KS 7 14 8
Buckhorn, KY 6 11 14
Boothville, LA 0 7 24
Frederick, MD 7 13 8
Ocean City, MD 12 11 5
Grand Bay Wildlife Refuge, MS 0 9 22
Potosi, MO 8 14 7
Lake McConaughy, NE 9 13 8
Ruidoso, NM 8 17 5
Patchogue, NY 14 12 3
Asheville, NC 6 14 9
Ocracoke Island, NC 6 21 3
Bismarck, ND 16 10 1
Columbus, OH 9 11 8
Beaverton, OR 19 10 1
Umatilla, OR 13 14 4
Kingsport, TN 4 12 14
Galveston, TX 0 10 21
Lynchburg, VA 6 13 10

Rain

Listed here are averages for the month's total rainfall. Most sites also have the number of days with rainy weather. That includes the days when precipitation amounts to 0.01 inches (0.25 millimetres) or more.

May averages for total rainfall
Days Place Inches Milli­metres
7 Dauphin Island, AL 4.4 112
4 Pinetop - Lakeside, AZ 0.8 19
9 Mammoth Spring, AR 4.1 103
3 Oakland, CA 0.7 17
3 Santa Cruz, CA 0.8 21
7 Durango, CO 1.1 28
9 Gainesville, GA 3.8 97
8 Waikiki, HI 1.0 25
12 Windsor, IL 4.4 111
13 Decatur, IN 4.3 109
13 Des Moines, IA 4.7 120
9 John Redmond Lake, KS 4.7 118
13 Buckhorn, KY 4.2 105
6 Boothville, LA 2.8 72
Frederick, MD 4.6 116
Ocean City, MD 3.6 92
7 Grand Bay Wildlife Refuge, MS 4.7 118
10 Potosi, MO 4.8 122
Lake McConaughy, NE 3.0 76
5 Ruidoso, NM 1.2 30
10 Patchogue, NY 3.8 97
12 Asheville, NC 3.3 83
7 Ocracoke Island, NC 4.1 105
Bismarck, ND 2.6 65
14 Columbus, OH 4.2 106
Beaverton, OR 2.6 65
Umatilla, OR 0.7 18
13 Kingsport, TN 4.1 104
6 Galveston, TX 3.0 76
12 Lynchburg, VA 3.7 95
Reference

National Climatic Data Center. Comparative Climatic Data.

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