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 November 2019. For more information, please see Climatological Rankings.
Pennsylvania
Precipitation Rankings, December 1999
View Period (Months):All1234567891011121824364860
Download:
| Period | Value | 1901-2000 Mean |
Anomaly | Rank (1895-2018) |
Wettest/Driest Since |
Record |
|---|---|---|---|---|---|---|
|
December 1999 1-Month |
2.44" (61.98mm) | 3.11" (78.99mm) |
-0.67" (-17.01mm) | 31st Driest | Driest since: 1998 | 1955 |
| 94th Wettest | Wettest since: 1997 | 1990 | ||||
|
Nov–Dec 1999 2-Month |
5.81" (147.57mm) | 6.29" (159.77mm) |
-0.48" (-12.20mm) | 46th Driest | Driest since: 1998 | 1917 |
| 79th Wettest | Wettest since: 1997 | 1972 | ||||
|
Oct–Dec 1999 3-Month |
8.09" (205.49mm) | 9.46" (240.28mm) |
-1.37" (-34.79mm) | 35th Driest | Driest since: 1998 | 1924 |
| 90th Wettest | Wettest since: 1997 | 1927 | ||||
|
Sep–Dec 1999 4-Month |
14.74" (374.40mm) | 13.04" (331.22mm) |
1.70" (43.18mm) | 90th Driest | Driest since: 1998 | 1908 |
| 35th Wettest | Wettest since: 1996 | 2018 | ||||
| Ties: 2008 | ||||||
|
Aug–Dec 1999 5-Month |
18.41" (467.61mm) | 16.91" (429.51mm) |
1.50" (38.10mm) | 80th Driest | Driest since: 1998 | 1930 |
| 45th Wettest | Wettest since: 1996 | 2018 | ||||
| Ties: 1956 | ||||||
|
Jul–Dec 1999 6-Month |
21.03" (534.16mm) | 21.10" (535.94mm) |
-0.07" (-1.78mm) | 54th Driest | Driest since: 1998 | 1930 |
| 71st Wettest | Wettest since: 1997 | 2018 | ||||
| Ties: 1925, 1997 | ||||||
|
Jun–Dec 1999 7-Month |
23.40" (594.36mm) | 25.27" (641.86mm) |
-1.87" (-47.50mm) | 34th Driest | Driest since: 1998 | 1930 |
| 91st Wettest | Wettest since: 1997 | 2018 | ||||
|
May–Dec 1999 8-Month |
25.96" (659.38mm) | 29.19" (741.43mm) |
-3.23" (-82.05mm) | 23rd Driest | Driest since: 1998 | 1930 |
| 102nd Wettest | Wettest since: 1997 | 2018 | ||||
|
Apr–Dec 1999 9-Month |
29.92" (759.97mm) | 32.84" (834.14mm) |
-2.92" (-74.17mm) | 28th Driest | Driest since: 1998 | 1930 |
| 97th Wettest | Wettest since: 1997 | 2018 | ||||
|
Mar–Dec 1999 10-Month |
33.38" (847.85mm) | 36.33" (922.78mm) |
-2.95" (-74.93mm) | 29th Driest | Driest since: 1998 | 1930 |
| 96th Wettest | Wettest since: 1997 | 2011 | ||||
|
Feb–Dec 1999 11-Month |
35.28" (896.11mm) | 38.93" (988.82mm) |
-3.65" (-92.71mm) | 24th Driest | Driest since: 1995 | 1930 |
| 101st Wettest | Wettest since: 1998 | 2018 | ||||
|
Jan–Dec 1999 12-Month |
41.12" (1,044.45mm) | 41.98" (1,066.29mm) |
-0.86" (-21.84mm) | 50th Driest | Driest since: 1998 | 1930 |
| 75th Wettest | Wettest since: 1996 | 2018 | ||||
|
Jul 1998–Dec 1999 18-Month |
54.78" (1,391.41mm) | 63.09" (1,602.49mm) |
-8.31" (-211.08mm) | 12th Driest | Driest since: 1966 | 1931 |
| 112th Wettest | Wettest since: 1998 | 2018 | ||||
|
Jan 1998–Dec 1999 24-Month |
81.53" (2,070.86mm) | 83.92" (2,131.57mm) |
-2.39" (-60.71mm) | 36th Driest | Driest since: 1998 | 1931 |
| 88th Wettest | Wettest since: 1997 | 2018 | ||||
|
Jan 1997–Dec 1999 36-Month |
120.33" (3,056.38mm) | 125.86" (3,196.84mm) |
-5.53" (-140.46mm) | 24th Driest | Driest since: 1988 | 1965 |
| 99th Wettest | Wettest since: 1998 | 2004 | ||||
|
Jan 1996–Dec 1999 48-Month |
176.64" (4,486.66mm) | 167.85" (4,263.39mm) |
8.79" (223.27mm) | 93rd Driest | Driest since: 1998 | 1966 |
| 29th Wettest | Wettest since: 1997 | 2006 | ||||
|
Jan 1995–Dec 1999 60-Month |
214.15" (5,439.41mm) | 209.87" (5,330.70mm) |
4.28" (108.71mm) | 73rd Driest | Driest since: 1995 | 1966 |
| 48th Wettest | Wettest since: 1998 | 2007 | ||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published December 2019, retrieved on December 10, 2019 from https://www.ncdc.noaa.gov/cag/