Climate at a Glance
Statewide 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 December 2020. For more information, please see Climatological Rankings.
Maryland
Precipitation Rankings, September 2018
View Period (Months):All1234567891011121824364860
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| Period | Value | 1901-2000 Mean |
Anomaly | Rank (1895-2020) |
Wettest/Driest Since |
Record |
|---|---|---|---|---|---|---|
|
September 2018 1-Month |
9.14" (232.16mm) | 3.56" (90.42mm) |
5.58" (141.74mm) | 123rd Driest | Driest since: 2017 | 1941 |
| 4th Wettest | Wettest since: 1999 | 1999 | ||||
|
Aug–Sep 2018 2-Month |
14.09" (357.89mm) | 7.95" (201.93mm) |
6.14" (155.96mm) | 122nd Driest | Driest since: 2017 | 1930 |
| 5th Wettest | Wettest since: 2011 | 2011 | ||||
|
Jul–Sep 2018 3-Month |
22.29" (566.17mm) | 12.13" (308.10mm) |
10.16" (258.07mm) | 126th Driest | Driest since: 2017 | 1930 |
| 1st Wettest | Wettest to Date | 2018 | ||||
|
Jun–Sep 2018 4-Month |
27.39" (695.71mm) | 15.98" (405.89mm) |
11.41" (289.82mm) | 126th Driest | Driest since: 2017 | 1930 |
| 1st Wettest | Wettest to Date | 2018 | ||||
|
May–Sep 2018 5-Month |
35.00" (889.00mm) | 19.71" (500.63mm) |
15.29" (388.37mm) | 126th Driest | Driest since: 2017 | 1930 |
| 1st Wettest | Wettest to Date | 2018 | ||||
|
Apr–Sep 2018 6-Month |
38.75" (984.25mm) | 23.19" (589.03mm) |
15.56" (395.22mm) | 126th Driest | Driest since: 2017 | 1930 |
| 1st Wettest | Wettest to Date | 2018 | ||||
|
Mar–Sep 2018 7-Month |
41.53" (1,054.86mm) | 26.97" (685.04mm) |
14.56" (369.82mm) | 126th Driest | Driest since: 2017 | 1930 |
| 1st Wettest | Wettest to Date | 2018 | ||||
|
Feb–Sep 2018 8-Month |
46.26" (1,175.00mm) | 29.85" (758.19mm) |
16.41" (416.81mm) | 126th Driest | Driest since: 2017 | 1930 |
| 1st Wettest | Wettest to Date | 2018 | ||||
|
Jan–Sep 2018 9-Month |
48.66" (1,235.96mm) | 33.21" (843.53mm) |
15.45" (392.43mm) | 126th Driest | Driest since: 2017 | 1930 |
| 1st Wettest | Wettest to Date | 2018 | ||||
|
Dec 2017–Sep 2018 10-Month |
49.61" (1,260.09mm) | 36.49" (926.85mm) |
13.12" (333.24mm) | 122nd Driest | Driest since: 2017 | 1930 |
| 4th Wettest | Wettest since: 2003 | 2003 | ||||
|
Nov 2017–Sep 2018 11-Month |
51.57" (1,309.88mm) | 39.48" (1,002.79mm) |
12.09" (307.09mm) | 122nd Driest | Driest since: 2017 | 1930 |
| 4th Wettest | Wettest since: 2003 | 2003 | ||||
|
Oct 2017–Sep 2018 12-Month |
55.36" (1,406.14mm) | 42.62" (1,082.55mm) |
12.74" (323.59mm) | 121st Driest | Driest since: 2017 | 1930 |
| 5th Wettest | Wettest since: 2003 | 2003 | ||||
|
Apr 2017–Sep 2018 18-Month |
81.88" (2,079.75mm) | 65.72" (1,669.29mm) |
16.16" (410.46mm) | 123rd Driest | Driest since: 2017 | 1966 |
| 3rd Wettest | Wettest since: 2004 | 2019 | ||||
|
Oct 2016–Sep 2018 24-Month |
96.30" (2,446.02mm) | 85.14" (2,162.56mm) |
11.16" (283.46mm) | 110th Driest | Driest since: 2017 | 1930 |
| 15th Wettest | Wettest since: 2011 | 2004 | ||||
|
Oct 2015–Sep 2018 36-Month |
142.43" (3,617.72mm) | 127.72" (3,244.09mm) |
14.71" (373.63mm) | 113th Driest | Driest since: 2017 | 1931 |
| 11th Wettest | Wettest since: 2005 | 2005 | ||||
|
Oct 2014–Sep 2018 48-Month |
188.39" (4,785.11mm) | 170.22" (4,323.59mm) |
18.17" (461.52mm) | 114th Driest | Driest since: 2017 | 1932 |
| 9th Wettest | Wettest since: 2006 | 2006 | ||||
|
Oct 2013–Sep 2018 60-Month |
236.02" (5,994.91mm) | 212.69" (5,402.33mm) |
23.33" (592.58mm) | 115th Driest | Driest since: 2017 | 1966 |
| 7th Wettest | Wettest since: 2007 | 1975 |
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published January 2021, retrieved on January 27, 2021 from https://www.ncdc.noaa.gov/cag/