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January temperature by ZIP code

An interactive U.S. map of January temperature for states, metro areas, counties and ZIP codes. Latest data: 1991–2020. PLUS

Open January temperature on the map
Map: January temperature in the U.S. 1991–2020. ZIP codes.
January temperature in the U.S. 1991–2020. ZIP codes. Source: NOAA nClimDiv county values, 1991–2020 average; population-weighted average of the counties each ZIP overlaps (Home Economics). Map: ProMap, Home Economics.

What this measure is

The average January temperature over 1991–2020, in degrees Fahrenheit, day and night together. It comes from NOAA's county series, which averages a 5-kilometre grid built from weather stations, so a county with mountains or a coast reads as its overall average, not as its main town. States, metros and ZIP codes are population-weighted averages of their counties.

Source, dates and coverage

Source
National Oceanic and Atmospheric Administration (NOAA), county climate series; averages by Home Economics.
Updated
A fixed 30-year average, 1991–2020. Latest data on the map: 1991–2020.
Areas on the map
States, metro areas, counties and ZIP codes.
Group
Climate & hazard risk
Access
ProMap Plus ($19 a month or $190 a year).

Values for every place

January temperature is a ProMap Plus measure. The map shows it for the areas listed above. This page shows the map's national picture, the method and the source, and no figures.

ProMap Plus costs $19 a month or $190 a year. A free 7-day trial is offered on the map.

See January temperature in ProMap Plus

How to cite

Home Economics (Aziz Sunderji), ProMap, “January temperature”, https://homeeconomics.us/promap/measure/january-temperature, accessed 15 November 2026.

Please also credit the original source: National Oceanic and Atmospheric Administration (NOAA), county climate series; averages by Home Economics.

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