Thunder Bay Longest Dry Streaks

What's longest streak without rain in Thunder Bay history? This page shows the most consecutive days it has gone without precipitation in Thunder Bay, Ontario from 1941–2024.

Longest rain streaks

Longest Streak: 34 Days

Between Mar 22 – Apr 24, 1984, there were no recorded days with at least 0.01 inches of rain or 0.1 inches of snow in Thunder Bay.

# Days	When
34	Mar 22 – Apr 24, 1984
30	Mar 19 – Apr 17, 1958
25	Apr 13 – May 7, 1978
21	Mar 2–22, 1987
20	Feb 1–20, 2012
20	Mar 6–25, 1970
20	Apr 3–22, 1944
19	Aug 2–20, 2007
19	Oct 12–30, 1977
19	Mar 29 – Apr 16, 1975
19	Oct 5–23, 1942
18	Jul 28 – Aug 14, 1991
18	May 20 – Jun 6, 1976
18	Mar 15 – Apr 1, 1973
17	Feb 1–17, 2018
17	Dec 3–19, 2009
17	Aug 13–29, 1976
17	Sep 20 – Oct 6, 1948
16	Feb 16 – Mar 3, 2010
16	Dec 15–30, 1986

Weather Station Details

Years	Station	Coordinates
2004–2024	Thunder Bay CS	location
1941–2003	Thunder Bay A	location