for the Great Falls Montana Area
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Weather Extremes United States and World
information represents the recorded weather extremes for the United
States and the World. For your convenience, these records are
quoted in Fahrenheit and Celsius / inches and meters.
- Highest average annual
World: Dallol, Ethiopia (Oct 1960Dec 1966), 94° F
United States: Key West, FL (30-year normal),
- Lowest average annual
World: Plateau Station, Antarctica, 70° F
United States: Barrow, AK (30-year normal), 9.3° F
- Greatest average yearly
World: Cherrapunji, India (74-year average), 450 in. (1,143
United States: Mt. Waialeale, Kauai, HA (32-year average), 460 in. (1,168 cm).
- Minimum average yearly
World: Arica, Chile (59-year average), 0.03 in.
(no rainfall for 14 consecutive years).
United States: Death Valley, CA (42-year average), 1.63
in. (4.14 cm). Bagdad, CA, holds the U.S. record for the
longest period with no measurable rain, 767 days, from Oct 3,
1912 to Nov 8, 1914.
- Hottest summer average
in Western Hemisphere:
Death Valley, CA, 98° F (36.7° C).
- Longest hot spell:
Marble Bar, W. Australia, 100° F (37.8° C) (or above)
for 162 consecutive days, Oct. 30, 1923 to Apr. 7, 1924.
- Largest hailstone:
Aurora, NE, 7 in. (17.8 cm) in diameter, 18.75 in.
(47.6 cm) in circumference, June 22, 2003.
- Most Expensive U.S.
hailstorm: Denver, CO, July 11, 1990. Total
damage was $625 million.