Climate at a Glance
National Rankings
Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of January 2021. For more information, please see Climatological Rankings.
Contiguous U.S.
Precipitation Rankings, May 2018
View Period (Months):All1234567891011121824364860
Download:
| Period | Value | 1901-2000 Mean |
Anomaly | Rank (1895-2020) |
Wettest/Driest Since |
Record |
|---|---|---|---|---|---|---|
|
May 2018 1-Month |
3.02" (76.71mm) | 2.91" (73.91mm) |
0.11" (2.80mm) | 76th Driest | Driest since: 2014 | 1934 |
| 51st Wettest | Wettest since: 2017 | 2019 | ||||
|
Apr–May 2018 2-Month |
5.48" (139.19mm) | 5.43" (137.92mm) |
0.05" (1.27mm) | 69th Driest | Driest since: 2012 | 1934 |
| 58th Wettest | Wettest since: 2017 | 1957 | ||||
|
Mar–May 2018 3-Month |
7.96" (202.18mm) | 7.94" (201.68mm) |
0.02" (0.50mm) | 65th Driest | Driest since: 2012 | 1925 |
| 62nd Wettest | Wettest since: 2017 | 1957, 1991 | ||||
| Ties: 1896, 1989 | ||||||
|
Feb–May 2018 4-Month |
10.85" (275.59mm) | 10.07" (255.78mm) |
0.78" (19.81mm) | 93rd Driest | Driest since: 2014 | 1925 |
| 34th Wettest | Wettest since: 2017 | 2019 | ||||
| Ties: 1948 | ||||||
|
Jan–May 2018 5-Month |
12.70" (322.58mm) | 12.39" (314.71mm) |
0.31" (7.87mm) | 79th Driest | Driest since: 2014 | 1934 |
| 48th Wettest | Wettest since: 2017 | 2019 | ||||
|
Dec 2017–May 2018 6-Month |
14.29" (362.97mm) | 14.73" (374.14mm) |
-0.44" (-11.17mm) | 47th Driest | Driest since: 2014 | 1931 |
| 79th Wettest | Wettest since: 2017 | 2019 | ||||
|
Nov 2017–May 2018 7-Month |
15.91" (404.11mm) | 16.96" (430.78mm) |
-1.05" (-26.67mm) | 33rd Driest | Driest since: 2006 | 1934 |
| 93rd Wettest | Wettest since: 2017 | 1983 | ||||
|
Oct 2017–May 2018 8-Month |
18.51" (470.15mm) | 19.13" (485.90mm) |
-0.62" (-15.75mm) | 41st Driest | Driest since: 2014 | 1934 |
| 85th Wettest | Wettest since: 2017 | 2019 | ||||
|
Sep 2017–May 2018 9-Month |
20.78" (527.81mm) | 21.62" (549.15mm) |
-0.84" (-21.34mm) | 36th Driest | Driest since: 2006 | 1934 |
| 90th Wettest | Wettest since: 2017 | 2019 | ||||
|
Aug 2017–May 2018 10-Month |
24.20" (614.68mm) | 24.25" (615.95mm) |
-0.05" (-1.27mm) | 60th Driest | Driest since: 2014 | 1918 |
| 66th Wettest | Wettest since: 2017 | 2019 | ||||
|
Jul 2017–May 2018 11-Month |
27.00" (685.80mm) | 27.03" (686.56mm) |
-0.03" (-0.76mm) | 61st Driest | Driest since: 2013 | 1931 |
| 65th Wettest | Wettest since: 2017 | 2019 | ||||
|
Jun 2017–May 2018 12-Month |
30.07" (763.78mm) | 29.95" (760.73mm) |
0.12" (3.05mm) | 60th Driest | Driest since: 2013 | 1934 |
| 66th Wettest | Wettest since: 2017 | 2019 | ||||
|
Dec 2016–May 2018 18-Month |
47.73" (1,212.34mm) | 44.70" (1,135.38mm) |
3.03" (76.96mm) | 101st Driest | Driest since: 2015 | 1931 |
| 24th Wettest | Wettest since: 2017 | 2019 | ||||
|
Jun 2016–May 2018 24-Month |
63.47" (1,612.14mm) | 59.92" (1,521.97mm) |
3.55" (90.17mm) | 102nd Driest | Driest since: 2015 | 1931 |
| 23rd Wettest | Wettest since: 2017 | 2020 | ||||
|
Jun 2015–May 2018 36-Month |
98.05" (2,490.47mm) | 89.88" (2,282.95mm) |
8.17" (207.52mm) | 114th Driest | Driest since: 2016 | 1955 |
| 10th Wettest | Wettest since: 2017 | 2019 | ||||
|
Jun 2014–May 2018 48-Month |
130.19" (3,306.83mm) | 119.78" (3,042.41mm) |
10.41" (264.42mm) | 115th Driest | Driest since: 2016 | 1956 |
| 8th Wettest | Wettest since: 2017 | 2019 | ||||
|
Jun 2013–May 2018 60-Month |
160.57" (4,078.48mm) | 149.64" (3,800.86mm) |
10.93" (277.62mm) | 115th Driest | Driest since: 2017 | 1957 |
| 7th Wettest | Wettest since: 1999 | 2020 | ||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: National Time Series, published February 2021, retrieved on March 7, 2021 from https://www.ncdc.noaa.gov/cag/