• Today

    Apr 18

    71°Lo 42°

    Warmer

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
  • Sun

    Apr 19

    61°Lo 39°

    Sunny much of the time

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
    more
  • Mon

    Apr 20

    49°Lo 46°

    Breezy and colder with rain

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
    more
  • Tue

    Apr 21

    63°Lo 42°

    Warmer with a shower or two

    Low ragweed pollen levels
    • Precip
      57%
    • Wind
      Speed
      10 mph
    • Cloud
      Cover
      82%
    more
  • Wed

    Apr 22

    61°Lo 41°

    Mostly cloudy

    Ragweed Pollen Weather
    • Precip
      25%
    • Wind
      Speed
      14 mph
    • Cloud
      Cover
      42%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sat
12pm
1pm 2pm 3pm 4pm 5pm 6pm 7pm
  12pm 1pm 2pm 3pm 4pm 5pm 6pm 7pm
Forecast
Sunny
Sunny
Partly Cloudy
Partly Cloudy
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Temp (°F) 65° 68° 69° 71° 69° 67° 65° 64°
RealFeel® 72° 74° 73° 72° 69° 66° 63° 60°
Humidity 41% 37% 34% 31% 31% 32% 33% 35%
   
  12pm 1pm 2pm 3pm 4pm 5pm 6pm 7pm
Rain
 
6%
 
4%
 
2%
 
2%
 
2%
 
2%
 
2%
 
1%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  12pm 1pm 2pm 3pm 4pm 5pm 6pm 7pm
Wind (mph) 6 N 8 NW 9 WNW 12 WNW 13 W 13 W 13 WNW 12 WNW
UV Index 6 6 5 4 3 2 1 0
Cloud Cover 2% 4% 53% 54% 44% 46% 46% 46%
Dew Point 41° 40° 40° 39° 37° 37° 36° 35°
Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F

Temperature History - Apr 18

more Historical Weather Data >
  Today Normal Record 4/18/2014
High 71° 60° N/A 49°
Low 42° 37° N/A 25°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:01 AM with 13:31 of sunlight, then sets at 7:32 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 6:00 AM with 13:36 of moolight, then sets at 7:36 PM

Lancaster Weather Report

2015 Boston Marathon Forecast: Rain and Wind in Store for Runners

April 18, 2015; 10:48 AM ET

The 119th Boston Marathon will take place on Monday, April 20, and runners set to take on the historic course will face cool and rainy conditions. more >

Sat. Pollen

Sat. Dust & Dander

Sat. Wind Maps