Climatological Rankings

NCDC added Alaska climate divisions to its nClimDiv dataset on Friday, March 6, 2015, coincident with the release of the February 2015 monthly monitoring report. For more information on this data, please visit the Alaska Climate Divisions FAQ.

Look up monthly U.S., Statewide, DivisionalClimate Divisions, and RegionalClimate Regions Temperature, Precipitation, Degree Days, and Palmer (Drought) rankings for 1-12, 18, 24, 36, 48, 60-month, and Year-to-Date time periods. Data and statistics are as of January 1895.
Please note, Degree Days are not available for Alaska, Agricultural Belts, NWS Regions, and Cities; Palmer Indices are not available for Alaska, NWS Regions, and Cities.

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Contiguous U.S. Average Temperature Rankings, May 2009

Record Coolest
Bottom 1/10
Bottom 1/3
Normal
Top 1/3
Top 1/10
Record Warmest

More information on Climatological Rankings

Download: xml csv json
Period Avg Temp 20th Century
Average
Departure Rank Warmest/Coolest
Since
Record
May 2009
1-month period
61.65°F
(16.47°C)
60.20°F
(15.67°C)
1.45°F
(0.80°C)
97ᵗʰ Coolest Coolest since: 2008 1917
25ᵗʰ Warmest Warmest since: 2007 1934
Mar - May 2009
3-month period
51.81°F
(11.01°C)
50.92°F
(10.51°C)
0.89°F
(0.50°C)
91ˢᵗ Coolest Coolest since: 2008 2015
31ˢᵗ Warmest Warmest since: 2007 2012
Ties: 1988
Jan - May 2009
5-month period
44.65°F
(7.03°C)
43.34°F
(6.30°C)
1.31°F
(0.73°C)
100ᵗʰ Coolest Coolest since: 2008 2015
22ⁿᵈ Warmest Warmest since: 2007 2012
Jun 2008 - May 2009
12-month period
52.85°F
(11.58°C)
52.03°F
(11.13°C)
0.82°F
(0.45°C)
98ᵗʰ Coolest Coolest since: 2001 2015
23ʳᵈ Warmest Warmest since: 2008 2012