Monsoons Return to the Southwest U.S.; Potential Atlantic Tropical System Interaction

In Arizona and New Mexico, heavy to excessive rainfall from monsoon thunderstorms may bring isolated flash and urban flooding Thursday into Sunday. The close proximity of Tropical Storm Humberto and a tropical wave (AL94) could lead to interaction between them, and details of their long-range track and intensity forecasts, and any potential impacts, are more uncertain than usual. Read More >

Current conditions at

Lancaster, Lancaster Airport (KLNS)

Lat: 40.12°NLon: 76.29°WElev: 397ft.

Fog/Mist

68°F

20°C

Humidity	100%
Wind Speed	SE 5 mph
Barometer	29.96 in (1014.3 mb)
Dewpoint	68°F (20°C)
Visibility	4.00 mi
Last update	25 Sep 1:53 am EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Columbia PA

Overnight
Low: 67 °F
Chance
Showers
Thursday
High: 78 °F
Showers
Thursday Night
Low: 64 °F
Showers then
Slight Chance
T-storms
Friday
High: 80 °F
Partly Sunny
Friday Night
Low: 61 °F
Mostly Cloudy
Saturday
High: 77 °F
Chance
Showers
Saturday Night
Low: 62 °F
Chance
Showers
Sunday
High: 76 °F
Chance
Showers
Sunday Night
Low: 63 °F
Chance
Showers

Detailed Forecast

Overnight

A chance of showers, mainly after 3am. Cloudy, with a low around 67. Light south wind. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday

Showers and possibly a thunderstorm. High near 78. South wind 5 to 9 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

Showers and thunderstorms, mainly before 11pm. Low around 64. West wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday

Partly sunny, with a high near 80. Northwest wind around 7 mph.

Friday Night

Mostly cloudy, with a low around 61. Calm wind.

Saturday

A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 77. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Saturday Night

A chance of showers. Cloudy, with a low around 62. Chance of precipitation is 40%.

Sunday

A chance of showers. Mostly cloudy, with a high near 76. Chance of precipitation is 30%.

Sunday Night

A chance of showers before 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.

Monday

A chance of showers after 2pm. Mostly cloudy, with a high near 78. Chance of precipitation is 30%.

Monday Night

A chance of showers. Mostly cloudy, with a low around 62. Chance of precipitation is 30%.

Tuesday

Partly sunny, with a high near 78.