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Lancaster weather

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Lancaster weather alerts and warnings

active National Weather Service watches, warnings and advisories

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Lancaster weather in numbers

from 30 years of measured normals

Lancaster swings 52°F across the year, from 91°F highs in July to 39°F lows in January, and August is usually the wettest month in a year that brings about 46 in of precipitation.

Warmest month
July
91°F average high
Coldest month
January
39°F average low
Wettest month
August
46 in a year
Below freezing
Never
overnight lows stay above 32°F
Comfortable
4 months
February, March, April and October
Residents
8,956
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The weather map: all three models at once

NWS, American, European side by side around Lancaster and nearby towns.Live rain radar →
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Lancaster hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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Lancaster 10-day forecast, out to 14 days

where the models agree, and where they split

Lancaster, South Carolina (SC) is at its warmest in Jul (average highs near 91°F) and coldest in Jan (lows around 39°F), with roughly 46 in of precipitation across the year. Below, compare what NWS, American, European forecast for Lancaster right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.

Lancaster climate by month

average daytime high and overnight low across a typical year
Jan
56°
39°
Feb
61°
42°
Mar
66°
46°
Apr
74°
52°
May
79°
60°
Jun
86°
66°
Jul
91°
72°
Aug
88°
70°
Sep
82°
65°
Oct
74°
54°
Nov
64°
46°
Dec
56°
39°

Which forecast is most accurate in the US?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
89
/100rank #1
88±1.2°F96±1.2 mph8491% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
73
/100rank #2
82±1.8°F93±2.3 mph4972% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.

What do you think of the forecasts?

your vote counts

The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United States? Give each 1 to 5 stars.

NWSNational Blend (NBM)
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AmericanNOAA GFS
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EuropeanECMWF
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One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.

Common questions

What's the weather in Lancaster today?
On this page we show what NWS, American, European each forecast for Lancaster today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Lancaster today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Lancaster and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Lancaster?
No single model is always right. NWS, American, European each run their own physics, so we line all three up: when they agree the Lancaster forecast is reliable, and when they split you should expect surprises. See our tested US accuracy scoreboard for how the models compare.
What is the warmest month in Lancaster?
July is typically the warmest month in Lancaster, with average highs around 91°F.
How cold does Lancaster get?
The coldest month in Lancaster is January, when overnight lows average about 39°F.
How much rain does Lancaster get?
Lancaster sees roughly 46 in of precipitation a year, with August usually the wettest month.

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