2018

+0.36°F

ran +0.36°F warmer than the 1996–2025 average across 386 cities — the 143rd coldest of 157 years on record.

Extremes

-46.0°F

Bettles, AK · Jan 22

123.0°F

Needles, CA · Jul 24

545

calendar-day record lows set in 2018 that still stand today

1,402

calendar-day record highs set in 2018 that still stand today

Each city's 2018 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 2018 — 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.

-0.51J

+2.06F

-1.20M

-2.93A

+3.94M

+1.26J

+0.79J

+0.74A

+1.59S

-0.02O

-2.67N

+1.18D

Warmest states of 2018

Alaska+2.35°Utah+1.81°Idaho+1.35°Guam+1.32°California+1.15°Colorado+1.11°

Coolest states of 2018

North Dakota-1.42°South Dakota-1.39°Montana-1.35°Minnesota-1.32°Nebraska-1.02°Iowa-0.95°

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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