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Average Distribution of Dew Point Temperatures, January

United StatesPhysical Environment

Average January dew points for the contiguous United States

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A map displays the average distribution of dew point temperatures across North America in January, using different colors to represent various temperature ranges.

Less than 20 degrees Fahrenheit (Red): Covers most of the United States, excluding the southern and coastal areas, extending into Canada and northern Mexico.

20 degrees Fahrenheit (Blue): North Texas, Oklahoma, Arkansas, Tennessee, North Carolina, Kentucky, eastern Washington, Eastern Oregon, Idaho, and some part of Utah.

30 degrees Fahrenheit (Purple): Most of California along the coast, western Oregon, western Washington, central Texas, northern Louisiana, Alabama, Georgia, and South Coalinga.

40 degrees Fahrenheit (Orange): Covers parts of southern Texas, Louisiana, south of Georgia and north of Florida.

50 degrees Fahrenheit (Yellow): Southcentral region of Florida.

55 degrees Fahrenheit (Green): Restricted to the southern tip of Florida.

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Average Distribution of Dew Point Temperatures, January

Cold Front

Tropical Cyclone Zones

Major Drainage Basins

Less than 20°F

20–29°F

30–39°F

40–49°F

50–54°F

55–59°F

Cold Front

Tropical Cyclone Zones

Atlantic Ocean Seaboard

Baja California

California

Churchill

Columbia and Northwestern United States

Fraser

Great Basin

Gulf Coast

Gulf of Mexico, North Atlantic Coast

Hudson Bay Coast

Mackenzie

Mexico, Northwest Coast

Mississippi - Missouri

North America, Colorado

Northwest Territories

Pacific and Arctic Coast

Río Grande - Bravo

Saskatchewan - Nelson

St John

St Lawrence

United States, North Atlantic Coast

Alaska
98.0%
Arizona
32.8%60.8%2.30%4.47%95.5%
Utah
93.9%5.41%5.42%0.394%51.8%47.8%
Yukon
26.5%73.4%
Northwest Territories
54.6%44.0%0.207%
District of Columbia
100%100%
Florida
14.7%56.6%21.0%7.07%3.68%2.91%98.4%
Idaho
84.3%6.93%95.7%4.03%0.316%
New Hampshire
100%99.7%0.302%
Rhode Island
3.92%92.6%
Vermont
99.7%42.4%53.3%4.27%
Washington
29.2%45.9%22.8%70.9%27.9%
Wyoming
100%5.11%1.48%72.4%21.0%
Nunavut
0.205%96.5%
Montana
99.9%17.1%82.4%0.445%
Maine
99.5%75.6%23.3%
North Dakota
100%58.0%42.0%
Kentucky
3.74%91.2%100%
Nova Scotia
94.2%
Virginia
20.5%1.66%25.9%17.7%55.4%
Delaware
99.1%97.0%
Prince Edward Island
61.9%
Saskatchewan
19.8%2.89%31.0%46.3%
Mississippi
21.7%78.0%0.303%50.1%49.8%
West Virginia
67.8%31.4%84.7%15.3%
Nebraska
100%2.25%100%
Texas
10.9%44.9%29.3%14.1%64.1%17.3%18.4%
Missouri
80.4%18.4%100%
Louisiana
61.7%37.9%2.07%5.73%1.66%91.0%
North Carolina
84.2%3.43%0.888%85.7%12.8%
Oregon
27.3%19.8%23.7%6.40%91.0%2.50%
New Brunswick
58.6%40.2%
Alabama
29.3%1.30%86.2%13.6%
New Mexico
81.8%1.03%4.48%7.00%14.8%19.5%54.2%
Kansas
96.6%3.36%5.13%100%
Wisconsin
99.5%69.3%30.7%
British Columbia
9.53%22.5%31.2%35.7%
Newfoundland and Labrador
75.3%22.1%0.795%
New Jersey
73.8%25.8%97.8%
South Carolina
41.6%58.3%99.9%
Michigan
98.1%100%
Alberta
66.5%0.906%2.66%29.9%
Connecticut
99.9%99.0%1.05%
Pennsylvania
99.4%34.4%1.43%64.1%
Colorado
100%5.40%56.1%36.7%7.14%
Nevada
73.6%6.36%3.75%5.41%80.0%10.9%
Massachusetts
98.2%0.220%91.1%2.45%
Georgia
26.7%54.5%18.7%97.1%2.66%
New York
96.9%0.410%4.00%49.4%45.5%
Maryland
34.3%32.0%4.25%93.5%
Québec
7.79%0.358%64.3%0.386%26.7%
Manitoba
17.7%34.5%47.7%
Oklahoma
17.8%81.3%100%
Tennessee
100%99.9%
Ontario
1.22%61.9%11.8%26.2%
California
10.8%23.3%1.46%0.273%94.9%0.130%1.98%2.37%
Arkansas
79.0%21.0%100%
South Dakota
100%99.2%0.773%
Ohio
96.3%3.50%71.3%28.7%
Indiana
92.1%7.40%89.5%10.5%
Minnesota
100%6.20%57.4%35.3%7.33%
Iowa
100%3.53%100%
Illinois
94.0%5.95%98.7%1.31%
0.16.0