May Precipitation & Averages

Severe Thunderstorms and Heavy Rainfall from the Lower Mississippi Valley to the Mid-Atlantic; Active Pattern Continues in Hawaii

Scattered severe thunderstorms are expected today from the ArkLaTex and Lower Mississippi Valley through the Ohio Valley and Mid-Atlantic. Thunderstorms may produce heavy to excessive rain that could pose a flooding threat today from east Texas into New York. A powerful kona storm will continue to impact Hawaii through Saturday, bringing heavy rainfall, strong winds, and severe thunderstorms. Read More >

May Normal Daily Precipitation (1991-2020)
Daily Precipitation records (1930-2024)
Day	Normal Precipitation	Record Precipitation	Record Year
1	.03	0.41	1959
2	.03	1.55	1941
3	.03	1.45	1941
4	.03	1.29	1969
5	.03	1.00	1982
6	.04	1.02	1969
7	.03	1.35	1959
8	.04	0.60	1932
9	.04	4.75	1968
10	.04	2.45	2012
11	.05	1.36	1958
12	.06	1.20	1958
13	.05	1.84	2019
14	.05	1.40	2010
15	.06	0.81	1980
16	.05	2.11	1984
17	.06	1.12	1957
18	.05	0.57	1952
19	.06	1.66	1961
20	.06	1.68	2019
21	.06	0.55	1993
22	.06	0.98	1963
23	.06	2.72	1992
24	.06	1.86	2003
25	.06	2.02	1992
26	.06	2.97	1941
27	.07	1.10	1982
28	.05	2.08	1964
29	.07	2.01	1971
30	.06	1.60	2024
31	.07	1.81	2021
MONTH	1.57

May Normal Daily Precipitation (1991-2020)
Daily Precipitation records (1930-2024)

Day

Normal Precipitation

Record Precipitation

Record
Year

.03

0.41

1959

.03

1.55

1941

.03

1.45

1941

.03

1.29

1969

.03

1.00

1982

.04

1.02

1969

.03

1.35

1959

.04

0.60

1932

.04

4.75

1968

.04

2.45

2012

.05

1.36

1958

.06

1.20

1958

.05

1.84

2019

.05

1.40

2010

.06

0.81

1980

.05

2.11

1984

.06

1.12

1957

.05

0.57

1952

.06

1.66

1961

.06

1.68

2019

.06

0.55

1993

.06

0.98

1963

.06

2.72

1992

.06

1.86

2003

.06

2.02

1992

.06

2.97

1941

.07

1.10

1982

.05

2.08

1964

.07

2.01

1971

.06

1.60

2024

.07

1.81

2021

MONTH

1.57