The Year in Heat & Cold
1999
-0.37°F
ran -0.37°F cooler than the 1996–2025 average across 381 cities — the 30th warmest of 157 years on record.
Extremes
Hottest Day of 1999
119.0°F
Lake Havasu City, AZ · Jun 30
Coldest Day of 1999
-64.0°F
Bettles, AK · Feb 9
Records Set in 1999
Daily Heat Records Set
973
calendar-day record highs set in 1999 that still stand today
Daily Cold Records Set
626
calendar-day record lows set in 1999 that still stand today
Where the Year Ran Warm & Cold
Each city's 1999 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 1999 — the number is the temperature, coloured hot-to-cold. Toggle between the two.
Month by Month
National temperature anomaly by month — red above the line is a warm month, blue below is cool.
+0.46J
+2.20F
-2.27M
-0.39A
-1.30M
-1.44J
-0.28J
-0.85A
-2.03S
-1.29O
+2.82N
+0.10D
Warmest Stations & States
Warmest Stations of 1999
| 1 | Hibbing MN | +2.95°F |
| 2 | Rhinelander WI | +2.60°F |
| 3 | Burlington IA | +2.59°F |
| 4 | Burley ID | +2.21°F |
| 5 | Havre MT | +2.17°F |
| 6 | Huron SD | +1.94°F |
| 7 | Millinocket ME | +1.89°F |
| 8 | Martinsburg WV | +1.83°F |
| 9 | Wausau WI | +1.78°F |
| 10 | Bangor ME | +1.76°F |
Coolest Stations of 1999
| 1 | Bethel AK | -6.73°F |
| 2 | King Salmon AK | -6.26°F |
| 3 | Nome AK | -5.97°F |
| 4 | Kotzebue AK | -5.79°F |
| 5 | Mcgrath AK | -5.32°F |
| 6 | Fairbanks AK | -4.85°F |
| 7 | Barrow AK | -4.17°F |
| 8 | Cold Bay AK | -4.13°F |
| 9 | Delta Junction AK | -4.09°F |
| 10 | Homer AK | -4.00°F |
By State
Warmest states of 1999
Maine+1.39°Minnesota+1.13°Wyoming+1.05°South Dakota+1.02°North Dakota+1.00°Wisconsin+0.98°
Coolest states of 1999
Alaska-3.92°California-1.78°Hawaii-1.50°Nevada-1.30°Utah-1.16°Puerto Rico-1.14°
Hottest Since · Browse all states · See where it's coldest → coldestsince.com
part of Weather Trader · supported by Substack Subscribers · data: NWS NDFD forecast + NOAA/ACIS ThreadEx records · updated 2026-07-12 22:52Z
© 2026 Weather Trader · All rights reserved
part of Weather Trader · supported by Substack Subscribers · data: NWS NDFD forecast + NOAA/ACIS ThreadEx records · updated 2026-07-12 22:52Z
© 2026 Weather Trader · All rights reserved