The Year in Heat & Cold
1931
+0.78°F
ran +0.78°F warmer than the 1996–2025 average across 293 cities — the 148th coldest of 157 years on record.
Coldest Day of 1931
-43.0°F
Barrow, AK · Feb 20
Hottest Day of 1931
120.0°F
Palm Springs, CA · Jul 5
Daily Cold Records Set
527
calendar-day record lows set in 1931 that still stand today
Daily Heat Records Set
1,633
calendar-day record highs set in 1931 that still stand today
Where the Year Ran Warm & Cold
Each city's 1931 average temperature versus its 1996–2025 normal — blue where the year ran cool, red where it ran hot.
Hottest & Coldest at Every City
Each city's single hottest and coldest reading of 1931 — 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.
Coolest Stations & States
Warmest states of 1931
Iowa+4.38°South Dakota+4.19°Minnesota+4.00°Wisconsin+3.46°Illinois+3.46°North Dakota+3.22°
Coolest states of 1931
Utah-4.55°Arizona-2.99°Alaska-2.21°New Mexico-2.11°Puerto Rico-1.96°Texas-1.29°