Lancaster weather live forecast

Today's maximum temperature in Lancaster is expected to be 25°C. Select a day from the live weather forecast for Lancaster, Pennsylvania, USA for more weather parameters.

Saturday
16th May
25

11

13

8
Sunday
17th May
27

17

7

8
Monday
18th May
31

18

11

8
Tuesday
19th May
33

20

12

8
Wednesday
20th May
32

21

8

8

5-day weather forecast updated at 04:01 on Saturday 16th May 2026 GMT

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The 5-day weather forecast for Pennsylvania (Lancaster) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Lancaster weather forecast by day

Below are the detailed weather forecasts for Lancaster for the next 5 days.

Lancaster weather for Saturday 16th May 2026

Expect scattered clouds in Lancaster, Pennsylvania with a maximum temperature of 25°C, maximum UV of 8 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the south-west.

25
°C maximum temperature
11
°C minimum temperature
scattered clouds
13
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
25
°C wind chill
8
kph wind from SW

Lancaster weather for Sunday 17th May 2026

Expect broken clouds in Lancaster, Pennsylvania with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 4 kph from the west.

27
°C maximum temperature
17
°C minimum temperature
broken clouds
7
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
4
kph wind from W

Lancaster weather for Monday 18th May 2026

Expect scattered clouds in Lancaster, Pennsylvania with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the south.

31
°C maximum temperature
18
°C minimum temperature
scattered clouds
11
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
7
kph wind from S

Lancaster weather for Tuesday 19th May 2026

Expect scattered clouds in Lancaster, Pennsylvania with a maximum temperature of 33°C, high levels of heat & humidity, maximum UV of 8 (Very High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the south.

33
°C maximum temperature
20
°C minimum temperature
scattered clouds
12
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
H
high heat & humidity
7
kph wind from S

Lancaster weather for Wednesday 20th May 2026

Expect isolated thunderstorms in Lancaster, Pennsylvania with a maximum temperature of 32°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 8 hours of bright sunshine. There are 2-5 mm of rainfall expected with 64% chance of some rain and a light breeze of 7 kph from the west.