Skip to main content
One weather site to rule them all
checkweather.io
CheckWeather CALewisville
Forecast confidence: Medium · models disagree by 3°C

Lewisville weather

Loading live data…

Mostly clear,rain likely tomorrow

Env. Canada, the European and the American model put Lewisville's high today between 13° and 16°, a 3° split. Tomorrow looks cloudy around 14°, with a 56% chance of rain.

15°
14°
16°
15°
17°
18°
Todaysplit ±3°Tomorrowmodels agreeMondaymodels agreeTuesdaysplit ±2°Wednesdaymodels agreeThursdaymodels agree
Env. CanadaGEM model
15°
Mostly clear
Today 15°·Low ·Rain 0%
EuropeanECMWF
16°
Partly cloudy
Today 16°·Low ·Rain 0%
AmericanNOAA GFS
13°
Cloudy
Today 13°·Low ·Rain 0%
CheckWeather.io on iPhoneFree. No ads, no account.

Lewisville weather in numbers

from 30 years of measured normals

Lewisville swings 38°C across the year, from 26°C highs in July to -12°C lows in February, and March is usually the wettest month in a year that brings about 1335 mm of precipitation.

Warmest month
July
26°C average high
Coldest month
February
-12°C average low
Wettest month
March
1335 mm a year
Below freezing
5 months
January, February, March, November and December
Comfortable
4 months
May, June, July and August
Residents
9,060
share this forecast

The weather map: all three models at once

Env. Canada, European, American side by side around Lewisville and nearby towns.Live rain radar →
Loading the three model maps…

Lewisville 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

Loading the three models…

Lewisville 10-day forecast, out to 14 days

where the models agree, and where they split
Today
Mostly clear
15°
±3°
Tomorrow
Cloudy
14°
models agree
Mon
Drizzle
16°
models agree
Tue
Cloudy
15°
±2°
Wed
Clear
17°
models agree
Thu
Cloudy
18°
models agree
Fri
Light drizzle
17°
±7°
Sat
Cloudy
17°
±4°
Sun
Mostly clear
18°
±3°
Mon
Rain
20° 11°
±3°
Tue
Heavy drizzle
20° 12°
models agree
Wed
Partly cloudy
20° 12°
±4°
Thu
Light rain
19° 12°
models agree
Fri
Cloudy
17° 10°
models agree

Lewisville, New Brunswick is at its warmest in Jul (average highs near 26°C) and coldest in Feb (lows around -12°C), with roughly 1335 mm of precipitation across the year. Below, compare what Env. Canada, European, American forecast for Lewisville 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 Canada before you trust any single number.

Lewisville climate by month

average daytime high and overnight low across a typical year
Jan
-9°
Feb
-1°
-12°
Mar
-5°
Apr
10°
May
16°
Jun
21°
12°
Jul
26°
17°
Aug
23°
15°
Sep
21°
12°
Oct
15°
Nov
-1°
Dec
-6°

Which forecast is most accurate in Lewisville?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
88
/100rank #1
92±0.4°C97±1.6 km/t7687% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
76
/100rank #2
88±0.7°C96±2.2 km/t4771% hitNOAA / NCEP (United States)College Park, Maryland, USA
EC
Env. Canada
73
/100rank #3
87±0.7°C94±2.8 km/t4268% hitEnvironment and Climate Change CanadaDorval, Québec, Canada

The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1304 cities. Lower error means a higher score. See which forecast model is most accurate in Canada, 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 Canada? Give each 1 to 5 stars.

Env. CanadaGEM model
Loading ratings…
EuropeanECMWF
Loading ratings…
AmericanNOAA GFS
Loading ratings…

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.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±3°13° to 16°models agree0% to 0% chance
Tomorrow±2°13° to 15°±33%23% to 56% chance
Mon±1°15° to 17°±27%34% to 61% chance
Tue±2°14° to 16°±2%0% to 2% chance
Wed±1°16° to 18°models agree0% to 0% chance

The models often agree on temperature and still split on rain, and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.

Sunrise and sunset in Lewisville

today, local time
Sunrise
07:02
Sunset
19:22
Daylight
12h 20m

Common questions

What's the weather in Lewisville today?
On this page we show what Env. Canada, European, American each forecast for Lewisville 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 Lewisville today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from Env. Canada, European, American for Lewisville 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 Lewisville?
Over the last 30 days, the European model has been the most accurate for Lewisville (CheckWeather Score 88/100), ahead of the American at 76. We grade every model against the recorded weather. See the CA accuracy scoreboard for the full method.
What is the warmest month in Lewisville?
July is typically the warmest month in Lewisville, with average highs around 26°C.
How cold does Lewisville get?
The coldest month in Lewisville is February, when overnight lows average about -12°C.
How much rain does Lewisville get?
Lewisville sees roughly 1335 mm of precipitation a year, with March usually the wettest month.

Nearby

More CA weather