National Temperature Index

National USHCN monthly temperature updates have been discontinued. The official CONUS temperature record is now based upon nClimDiv. USHCN data for January 1895 to August 2014 will remain available for historical comparison.

Time Series


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Dates USCRN ClimDiv USHCN
189510 - 189512 -99.99°F -2.80°F -2.59°F
189610 - 189612 -99.99°F -1.44°F -1.18°F
189710 - 189712 -99.99°F -1.11°F -0.99°F
189810 - 189812 -99.99°F -3.85°F -3.70°F
189910 - 189912 -99.99°F 0.14°F 0.42°F
190010 - 190012 -99.99°F 0.75°F 1.01°F
190110 - 190112 -99.99°F -0.50°F -0.26°F
190210 - 190212 -99.99°F -0.40°F -0.20°F
190310 - 190312 -99.99°F -1.80°F -1.56°F
190410 - 190412 -99.99°F -0.34°F -0.08°F
190510 - 190512 -99.99°F -1.75°F -1.51°F
190610 - 190612 -99.99°F -0.72°F -0.52°F
190710 - 190712 -99.99°F -0.27°F -0.09°F
190810 - 190812 -99.99°F -0.84°F -0.68°F
190910 - 190912 -99.99°F -2.20°F -2.00°F
191010 - 191012 -99.99°F -0.48°F -0.29°F
191110 - 191112 -99.99°F -2.66°F -2.38°F
191210 - 191212 -99.99°F -0.59°F -0.34°F
191310 - 191312 -99.99°F -0.01°F 0.20°F
191410 - 191412 -99.99°F -1.56°F -1.31°F
191510 - 191512 -99.99°F 0.51°F 0.70°F
191610 - 191612 -99.99°F -2.93°F -2.74°F
191710 - 191712 -99.99°F -2.17°F -1.97°F
191810 - 191812 -99.99°F 0.34°F 0.54°F
191910 - 191912 -99.99°F -3.14°F -2.97°F
192010 - 192012 -99.99°F -0.88°F -0.75°F
192110 - 192112 -99.99°F 0.97°F 1.13°F
192210 - 192212 -99.99°F 0.11°F 0.28°F
192310 - 192312 -99.99°F -0.10°F 0.16°F
192410 - 192412 -99.99°F -1.72°F -1.54°F
192510 - 192512 -99.99°F -2.76°F -2.56°F
192610 - 192612 -99.99°F -1.12°F -0.96°F
192710 - 192712 -99.99°F -0.55°F -0.36°F
192810 - 192812 -99.99°F -0.17°F 0.05°F
192910 - 192912 -99.99°F -1.27°F -1.08°F
193010 - 193012 -99.99°F -2.05°F -1.84°F
193110 - 193112 -99.99°F 1.63°F 1.83°F
193210 - 193212 -99.99°F -2.54°F -2.31°F
193310 - 193312 -99.99°F 1.35°F 1.55°F
193410 - 193412 -99.99°F 1.36°F 1.55°F
193510 - 193512 -99.99°F -2.03°F -1.81°F
193610 - 193612 -99.99°F -0.78°F -0.61°F
193710 - 193712 -99.99°F -0.90°F -0.71°F
193810 - 193812 -99.99°F 0.15°F 0.35°F
193910 - 193912 -99.99°F 1.54°F 1.70°F
194010 - 194012 -99.99°F 0.34°F 0.57°F
194110 - 194112 -99.99°F 1.37°F 1.64°F
194210 - 194212 -99.99°F 0.20°F 0.42°F
194310 - 194312 -99.99°F -0.97°F -0.75°F
194410 - 194412 -99.99°F -0.89°F -0.65°F
194510 - 194512 -99.99°F -1.63°F -1.42°F
194610 - 194612 -99.99°F 0.32°F 0.57°F
194710 - 194712 -99.99°F -0.10°F 0.13°F
194810 - 194812 -99.99°F -0.92°F -0.67°F
194910 - 194912 -99.99°F 0.82°F 1.05°F
195010 - 195012 -99.99°F 0.34°F 0.53°F
195110 - 195112 -99.99°F -2.27°F -2.03°F
195210 - 195212 -99.99°F -1.27°F -1.03°F
195310 - 195312 -99.99°F 1.22°F 1.45°F
195410 - 195412 -99.99°F 0.85°F 1.02°F
195510 - 195512 -99.99°F -1.71°F -1.55°F
195610 - 195612 -99.99°F 0.87°F 1.02°F
195710 - 195712 -99.99°F -0.39°F -0.19°F
195810 - 195812 -99.99°F -0.05°F 0.08°F
195910 - 195912 -99.99°F -0.73°F -0.59°F
196010 - 196012 -99.99°F -0.74°F -0.61°F
196110 - 196112 -99.99°F -1.56°F -1.41°F
196210 - 196212 -99.99°F 0.86°F 0.97°F
196310 - 196312 -99.99°F 0.40°F 0.45°F
196410 - 196412 -99.99°F -0.65°F -0.53°F
196510 - 196512 -99.99°F 1.79°F 1.84°F
196610 - 196612 -99.99°F -0.46°F -0.38°F
196710 - 196712 -99.99°F -0.86°F -0.74°F
196810 - 196812 -99.99°F -1.43°F -1.31°F
196910 - 196912 -99.99°F -1.34°F -1.23°F
197010 - 197012 -99.99°F -0.98°F -0.87°F
197110 - 197112 -99.99°F 0.19°F 0.29°F
197210 - 197212 -99.99°F -3.01°F -2.92°F
197310 - 197312 -99.99°F 0.87°F 0.92°F
197410 - 197412 -99.99°F -0.06°F -0.01°F
197510 - 197512 -99.99°F 0.47°F 0.50°F
197610 - 197612 -99.99°F -3.57°F -3.56°F
197710 - 197712 -99.99°F 0.01°F 0.04°F
197810 - 197812 -99.99°F -1.48°F -1.44°F
197910 - 197912 -99.99°F 0.37°F 0.42°F
198010 - 198012 -99.99°F -0.01°F 0.01°F
198110 - 198112 -99.99°F 0.20°F 0.23°F
198210 - 198212 -99.99°F 0.03°F 0.07°F
198310 - 198312 -99.99°F -2.20°F -2.13°F
198410 - 198412 -99.99°F -0.14°F -0.06°F
198510 - 198512 -99.99°F -2.50°F -2.55°F
198610 - 198612 -99.99°F -0.09°F -0.11°F
198710 - 198712 -99.99°F 0.45°F 0.47°F
198810 - 198812 -99.99°F 0.20°F 0.18°F
198910 - 198912 -99.99°F -1.70°F -1.76°F
199010 - 199012 -99.99°F -0.13°F -0.08°F
199110 - 199112 -99.99°F -0.06°F -0.11°F
199210 - 199212 -99.99°F -1.25°F -1.24°F
199310 - 199312 -99.99°F -1.24°F -1.24°F
199410 - 199412 -99.99°F 0.97°F 1.06°F
199510 - 199512 -99.99°F -0.07°F -0.05°F
199610 - 199612 -99.99°F -0.97°F -0.94°F
199710 - 199712 -99.99°F -0.44°F -0.44°F
199810 - 199812 -99.99°F 1.83°F 1.91°F
199910 - 199912 -99.99°F 2.95°F 2.81°F
200010 - 200012 -99.99°F -2.85°F -2.94°F
200110 - 200112 -99.99°F 2.60°F 2.63°F
200210 - 200212 -99.99°F -0.41°F -0.44°F
200310 - 200312 -99.99°F 1.36°F 1.40°F
200410 - 200412 -99.99°F 1.43°F 1.48°F
200510 - 200512 0.91°F 0.99°F 0.90°F
200610 - 200612 1.00°F 1.04°F 1.01°F
200710 - 200712 1.11°F 1.27°F 1.27°F
200810 - 200812 -0.08°F -0.11°F -0.18°F
200910 - 200912 -1.39°F -1.38°F -1.42°F
201010 - 201012 0.26°F 0.27°F 0.28°F
201110 - 201112 1.36°F 1.38°F 1.32°F
201210 - 201212 1.24°F 1.24°F 1.31°F
201310 - 201312 -1.34°F -1.33°F -99.99°F
201410 - 201412 1.01°F 0.96°F -99.99°F
201510 - 201512 3.58°F 3.46°F -99.99°F