1909

-1.72°F

ran -1.72°F cooler than the 1996–2025 average across 228 cities — the 47th coldest of 157 years on record.

Extremes

-44.0°F

Great Falls, MT · Jan 10

115.0°F

Needles, CA · Jul 1

780

calendar-day record lows set in 1909 that still stand today

464

calendar-day record highs set in 1909 that still stand today

Each city's 1909 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 1909 — 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.

+1.18J

+0.86F

-2.88M

-2.72A

-3.10M

-1.30J

-2.75J

-0.81A

-2.51S

-2.55O

+2.99N

-7.68D

Warmest states of 1909

Mississippi+0.53°Arkansas-0.03°West Virginia-0.33°Alabama-0.54°Virginia-0.90°Texas-0.92°

Coolest states of 1909

Arizona-5.30°Alaska-4.39°Vermont-4.24°District of Columbia-4.08°Wyoming-3.53°California-3.32°

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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