1998

+0.61°F

ran +0.61°F warmer than the 1996–2025 average across 371 cities — the 12th warmest of 157 years on record.

Extremes

120.0°F

Needles, CA · Jul 16

-49.0°F

Delta Junction, AK · Jan 5

1,414

calendar-day record highs set in 1998 that still stand today

337

calendar-day record lows set in 1998 that still stand today

Each city's 1998 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 1998 — 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.

+2.77J

+3.10F

-1.36M

-0.68A

+1.15M

-1.19J

-0.01J

+0.17A

+1.60S

-0.14O

+1.17N

+0.67D

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°

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
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