The Year in Heat & Cold
1998
+0.61°F
ran +0.61°F warmer than the 1996–2025 average across 371 cities — the 146th coldest of 157 years on record.
Extremes
Coldest Day of 1998
-49.0°F
Delta Junction, AK · Jan 5
Hottest Day of 1998
120.0°F
Needles, CA · Jul 16
Records Set in 1998
Daily Cold Records Set
337
calendar-day record lows set in 1998 that still stand today
Daily Heat Records Set
1,414
calendar-day record highs set in 1998 that still stand today
Where the Year Ran Warm & Cold
Each city's 1998 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 1998 — 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.
+2.77J
+3.10F
-1.36M
-0.68A
+1.15M
-1.19J
-0.01J
+0.17A
+1.60S
-0.14O
+1.17N
+0.67D
Coolest Stations & States
Coolest Stations of 1998
| 1 | Bakersfield CA | -4.01°F |
| 2 | Kingman AZ | -3.70°F |
| 3 | Las Vegas NV | -3.64°F |
| 4 | Palmdale CA | -3.51°F |
| 5 | Phoenix AZ | -3.49°F |
| 6 | Lancaster CA | -3.46°F |
| 7 | Reno NV | -3.31°F |
| 8 | Bishop CA | -3.27°F |
| 9 | Fresno CA | -3.24°F |
| 10 | Redding CA | -3.20°F |
Warmest Stations of 1998
| 1 | Burlington IA | +4.84°F |
| 2 | Rhinelander WI | +4.54°F |
| 3 | Baltimore Downtown MD | +4.50°F |
| 4 | Hibbing MN | +4.34°F |
| 5 | Wausau WI | +4.05°F |
| 6 | Martinsburg WV | +3.76°F |
| 7 | Eau Claire WI | +3.48°F |
| 8 | La Crosse WI | +3.30°F |
| 9 | Saginaw MI | +2.98°F |
| 10 | International Falls MN | +2.93°F |
By State
Warmest states of 1998
Wisconsin+3.07°Minnesota+2.53°Iowa+2.28°Michigan+2.26°Maryland+2.08°Indiana+1.94°
Coolest states of 1998
Arizona-2.71°Nevada-2.31°California-1.93°Utah-1.51°Hawaii-1.44°Colorado-0.89°
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
© 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