WETTESTSINCE
Iowa · precipitation record 1895–2026

Waterloo, IA

2026
NEAR NORMAL PRECIPITATION
24.31in
year to date · normal 19.48"
📖 Waterloo's full Precipitation Almanac →
rain ahead · next 3 days
1.69" of rain forecast
the most rain in 3 days since 2026
1.69in

Accumulation

TODAY
0.82in
6th wettest of 131 yrs
MONTH TO DATE
5.24in
33rd wettest of 132 yrs
154% of normal
LAST 90 DAYS
13.91in
48th wettest of 132 yrs
111% of normal
YEAR TO DATE
24.31in
21st wettest of 132 yrs
125% of normal

Extremes & Streaks

Biggest Day on Record

6.0in
on Sep 8, 1941 · in 132 years

Dry Streak

1days
current run under 0.01" · longest ever 43 days (to Oct 17, 1953)

Wet Streak

0days
consecutive days with rain · longest ever 10 days

Year to Date vs Normal

125%
24.31" of a normal 19.48" · wettest 36.28" (2008) · driest 8.98" (1910)

Wettest & Driest Years

The extremes of a 131-year record (1895–2025) — full calendar-year totals. The long-run average is 33.02" a year.

Wettest Years on Record

1201854.15in
2199353.07in
3196550.79in
4190249.76in
5196147.36in

Driest Years on Record

1191017.35in
2198818.99in
3198919.62in
4195520.53in
5193920.59in

Rainfall by Month

The seasonal rhythm — each month's normal precipitation, with this year's totals in blue. Where the blue bar clears the band, the month ran wetter than usual.
J
F
M
A
M
J
J
A
S
O
N
D
Normal (median)This year
Normally wettest in Jun (~4.67") and driest in Jan (~0.83"). Wettest calendar month ever: Sep 2018, 13.35".

This Day in History · Rainfall

Every year's rainfall on each of the next 7 dates at Waterloo — toggle a day below. The tallest bar (ringed) is the wettest on record for that date.

Wettest Jul 28 ever

2.12in
set in 1976

Rain on Jul 28

31%
of 131 years had measurable rain
1895: 0.00″1896: 0.00″1897: 0.00″1898: 0.00″1899: 0.00″1900: 0.77″1901: 1.07″1902: 0.00″1903: 0.00″1904: 0.00″1905: 0.00″1906: 0.62″1907: 0.00″1908: 0.00″1909: 0.00″1910: 0.19″1911: 0.55″1912: 0.00″1913: 0.00″1914: 0.40″1915: 0.00″1916: 0.00″1917: 0.00″1918: 0.00″1919: 1.43″1920: 0.00″1921: 0.00″1922: 0.00″1923: 0.00″1924: 0.00″1925: 0.00″1926: 0.81″1927: 0.25″1928: 0.00″1929: 0.02″1930: 0.00″1931: 0.00″1932: 0.00″1933: 0.00″1934: 0.00″1935: 0.00″1936: 0.00″1937: 0.00″1938: 0.00″1939: 0.50″1940: 0.01″1941: 0.05″1942: 0.03″1943: 0.00″1944: 0.20″1945: 0.35″1946: 0.22″1947: 0.00″1948: 0.00″1949: 0.00″1950: 0.00″1951: 0.00″1952: 0.00″1953: 0.00″1954: 0.00″1955: 0.00″1956: 0.11″1957: 0.15″1958: 0.14″1959: 0.11″1960: 0.00″1961: 0.00″1962: 0.08″1963: 0.00″1964: 0.00″1965: 0.00″1966: 0.02″1967: 0.00″1968: 0.00″1969: 0.00″1970: 0.16″1971: 0.00″1972: 0.00″1973: 0.00″1974: 0.00″1975: 0.00″1976: 2.12″1977: 0.37″1978: 0.00″1979: 0.00″1980: 0.00″1981: 0.00″1982: 0.00″1983: 1.48″1984: 0.00″1985: 0.00″1986: 0.19″1987: 0.00″1988: 0.00″1989: 0.00″1990: 0.35″1991: 0.27″1992: 0.00″1993: 0.00″1994: 0.00″1995: 0.00″1996: 0.23″1997: 0.00″1998: 0.00″1999: 0.51″2000: 0.00″2001: 0.01″2002: 0.32″2003: 0.00″2004: 0.00″2005: 0.00″2006: 0.00″2007: 0.00″2008: 0.00″2009: 0.00″2010: 0.00″2011: 0.14″2012: 0.00″2013: 0.00″2014: 0.00″2015: 1.69″2016: 0.00″2017: 0.00″2018: 0.00″2019: 0.53″2020: 0.00″2021: 0.00″2022: 0.23″2023: 0.31″2024: 0.30″2025: 0.82″0″1″2″3″1900191019201930194019501960197019801990200020102020

This Year's Rainfall

Waterloo's cumulative rainfall so far this year against its own record — the normal accumulation, and the wettest & driest years to date. The bright line is the running total; where it rides the band tells the story at a glance.
Waterloo, IA — cumulative rainfall this year vs the record
Download year chart

Rainfall Calendar

Waterloo's entire daily record as one heatmap — each row a year, each cell a day, shaded by that day's rainfall. Dry spells read as dark blocks, wet seasons as brighter bands; the whole climate at a glance.
Waterloo, IA — daily rainfall every day on record
Download calendar

Sun & Location

Sun & Daylight Today

Sunrise4:58 AM
Sunset7:33 PM
Solar noon12:16 PM
Daylight14h 35m
Local standard time (no DST), level horizon.

Location

42.55°N, 92.40°W

Nearby Stations

Cedar Rapids, IA57 mi SEDubuque, IA86 mi ERochester, MN93 mi NDes Moines, IA95 mi SWLa Crosse, WI108 mi NEMoline, IL122 mi SE

Share Card

Waterloo, IA precipitation share card
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