2009

-1.23°F

ran -1.23°F cooler than the 1996–2025 average across 386 cities — the 83rd coldest of 157 years on record.

Extremes

-54.0°F

Mcgrath, AK · Jan 3

119.0°F

Needles, CA · Jul 17

630

calendar-day record lows set in 2009 that still stand today

839

calendar-day record highs set in 2009 that still stand today

Each city's 2009 average temperature versus its 1996–2025 normal — blue where the year ran cool, red where it ran hot.

Each city's single hottest and coldest reading of 2009 — the number is the temperature, coloured hot-to-cold. Toggle between the two.

National temperature anomaly by month — red above the line is a warm month, blue below is cool.

-2.71J

+0.10F

-0.93M

-0.82A

+0.02M

-1.00J

-2.25J

-1.20A

-0.56S

-3.16O

+1.68N

-3.91D

Warmest states of 2009

Puerto Rico+0.30°Guam+0.17°New Mexico-0.41°Texas-0.42°Arizona-0.43°Florida-0.44°

Coolest states of 2009

North Dakota-2.77°South Dakota-2.74°Nebraska-2.36°Utah-2.30°Wisconsin-2.17°New Hampshire-2.01°

Coldest Since · Browse all states · See where it's hottest → hottestsince.com
part of Weather Trader · supported by Substack Subscribers · data: NWS NDFD forecast + NOAA/ACIS ThreadEx records · updated 2026-07-12 22:52Z
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