Slackwater, PA
Unincorporated community in Lancaster County, Pennsylvania
Slackwater is a small unincorporated community in Lancaster County, Pennsylvania. It is 1.6 miles N of Millersville, the nearest town. Its ZIP code is 17551.
Slackwater at a glance
- State
- Pennsylvania
- County
- Lancaster County
- ZIP code
- 17551
- Nearest town
- Millersville (1.6 mi)
- Time zone
- America/New York
- Coordinates
- 39.9822, -76.3564
Weather in Slackwater now
Loading the National Weather Service forecast…
Slackwater weather by the hour
Slackwater weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Slackwater.
This week in Slackwater
Sunrise, sunset and moon in Slackwater
What is the weather usually like in Slackwater?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 87°F average high
- Januarycoldest month · 25°F average low
- 46.3 inprecipitation per year · 1,177 mm
- 21.3 insnowfall per year · 54 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Slackwater: May–June and August–September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station SAFE HARBOR DAM, PA US (USC00367732), adjusted for the elevation of Slackwater.
Slackwater weather month by month
Sunrise and sunset in Slackwater through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:23 AM | 5:06 PM | 9 h 42 min |
| February | 6:56 AM | 5:42 PM | 10 h 46 min |
| March | 7:15 AM | 7:13 PM | 11 h 58 min |
| April | 6:25 AM | 7:45 PM | 13 h 19 min |
| May | 5:48 AM | 8:15 PM | 14 h 26 min |
| June | 5:34 AM | 8:37 PM | 15 h 3 min |
| July | 5:48 AM | 8:34 PM | 14 h 46 min |
| August | 6:15 AM | 8:03 PM | 13 h 47 min |
| September | 6:45 AM | 7:15 PM | 12 h 30 min |
| October | 7:14 AM | 6:27 PM | 11 h 12 min |
| November | 6:49 AM | 4:50 PM | 10 h 1 min |
| December | 7:18 AM | 4:42 PM | 9 h 24 min |
Times for the 15th of each month, local time (America/New York).
What is the weather like in Slackwater?
Slackwater has a hot-summer humid continental climate. The warmest month is July, with an average high of 87°F (30°C), and the coldest is January, with average lows of 25°F (-4°C).
It gets about 46.3 inches (1,177 mm) of precipitation a year. The wettest month is September and the driest is February. Snow is common: about 21 inches fall in an average year.
The best time to visit Slackwater is May–June and August–September. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
Webcams near Slackwater
The closest live webcam is Lancaster › West, 5.0 miles N of Slackwater.
Webcams: Windy.com. Distances in a straight line from Slackwater.
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Map of Slackwater, PA
Tap any road on the map to see it in Street View below. Map: © OpenStreetMap contributors.
Slackwater Street View
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Open in Google Maps ›Towns near Slackwater
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Questions about Slackwater
Where is Slackwater, PA?
Slackwater is an unincorporated community in Lancaster County, Pennsylvania, 1.6 miles N of Millersville.
What county is Slackwater in?
Slackwater is in Lancaster County, Pennsylvania.
What is the ZIP code of Slackwater, PA?
The ZIP code for Slackwater is 17551.
What is the nearest town to Slackwater?
Millersville, 1.6 miles away.
Are there webcams near Slackwater?
Yes. The closest is Lancaster › West, 5.0 miles away.
What is the hottest month in Slackwater?
July, with an average high of 87°F (30°C).
What is the coldest month in Slackwater?
January, with an average low of 25°F (-4°C).
How much does it rain in Slackwater?
About 46.3 inches (1,177 mm) a year; the wettest month is September.
Does it snow in Slackwater?
Yes, about 21 inches of snow fall in an average year.
When is the best time to visit Slackwater?
May–June and August–September, when temperatures are most pleasant and rainy days are fewer.
What climate does Slackwater have?
Hot-summer humid continental (Köppen Dfa).
Last updated: