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Forecast confidence: High · models disagree by 1°C

Letchworth Garden City weather

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Rain,rain likely tomorrow

Met Office, the European and the American model agree on a high near 15° in Letchworth Garden City today. Tomorrow: partly cloudy, around 12°, with a 100% chance of rain.

15°6°
12°8°
16°7°
16°9°
15°8°
12°8°
Todaymodels agreeTomorrowmodels agreeMondaymodels agreeTuesdaymodels agreeWednesdaymodels agreeThursdaysplit ±4°
Met OfficeUKMO model
15°
Rain
Today 15°·Low 6°·Rain 100%
EuropeanECMWF
14°
Light rain
Today 14°·Low 6°·Rain 100%
AmericanNOAA GFS
15°
Rain
Today 15°·Low 6°·Rain 100%
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Letchworth Garden City weather warnings

Met Office yellow, amber and red warnings for East of England

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Letchworth Garden City weather in numbers

measured normals and 10 years of recorded weather

Letchworth Garden City swings 21°C across the year, from 22°C highs in August to 1°C lows in February, and October is usually the wettest month in a year that brings about 614 mm of precipitation. Over 10 years of recorded weather it averages 17 days a year at 25°C or above, 3 of them at 30°C or above, 31 frost nights, and rain on 133 days.

Warmest month
August
22°C average high
Coldest month
February
1°C average low
Wettest month
October
614 mm a year
Comfortable
4 months
May, June, July and August
Residents
34,000
share this forecast
Most accurate here
Met Office
94/100 CheckWeather Score
Warm days
17 days
a year at 25°C or above
Frost nights
31 nights
a year below 0°C
Rain days
133 days
a year with 1 mm or more

Day counts are from the ERA5 reanalysis for Letchworth Garden City’s grid square, 2016 to 2025, counted the same way for every city so the numbers compare. A reanalysis square is an area, not a weather station, so it is good for counting days and not for a single day’s record.

The weather map: all three models at once

Met Office, European, American side by side around Letchworth Garden City and nearby towns.Live rain radar →
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Letchworth Garden City 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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Letchworth Garden City 10-day forecast, out to 14 days

where the models agree, and where they split
Today
Rain
15° 6°
models agree
Tomorrow
Partly cloudy
12° 8°
models agree
Mon
Drizzle
16° 7°
models agree
Tue
Drizzle
16° 9°
models agree
Wed
Cloudy
15° 8°
models agree
Thu
Cloudy
12° 8°
±4°
Fri
Cloudy
14° 8°
models agree
Sat
Heavy drizzle
12° 7°
±3°
Sun
Light drizzle
11° 6°
models agree
Mon
Light drizzle
11° 5°
±3°
Tue
Light drizzle
12° 6°
±4°
Wed
Light drizzle
10° 3°
±3°
Thu
Cloudy
7° 2°
±3°
Fri
Cloudy
8° 1°
±4°

Letchworth Garden City, England (often shortened to Letchworth) is at its warmest in Aug (average highs near 22°C) and coldest in Feb (lows around 1°C), with roughly 614 mm of precipitation across the year. Below, compare what Met Office, European, American forecast for Letchworth Garden City 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 Kingdom before you trust any single number.

Letchworth Garden City climate by month

average daytime high and overnight low across a typical year (1991-2020)
Jan
7°
2°
Feb
7°
1°
Mar
9°
3°
Apr
13°
5°
May
16°
8°
Jun
19°
10°
Jul
21°
13°
Aug
22°
13°
Sep
19°
10°
Oct
14°
8°
Nov
10°
5°
Dec
7°
3°

Source: 1991-2020 averages, ERA5 for this place adjusted with NASA POWER.

How the weather around Letchworth Garden City has changed since 1995

Letchworth Garden City sits in the same roughly 50 km square of NASA's reanalysis as Cambridge. That square ran 0.6°C warmer in 2015-2024 than in 1995-2004. See the full 30-year picture on the Cambridge page.

Which forecast is most accurate in Letchworth Garden City?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
Met Office logo
Met Office ★ Best
94
/100rank #1
92±0.5°C96±1.4 mph9597% hitMet Office (United Kingdom)Exeter, United Kingdom
European logo
European
94
/100rank #2
97±0.2°C98±0.5 mph8994% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
89
/100rank #3
93±0.4°C94±1.7 mph8290% 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 1950 cities. Lower error means a higher score. See which forecast model is most accurate in United Kingdom, 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 Kingdom? Give each 1 to 5 stars.

Met OfficeUKMO model
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EuropeanECMWF
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AmericanNOAA GFS
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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.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±1°14° to 15°models agree100% to 100% chance
Tomorrow±2°12° to 14°±67%33% to 100% chance
Mon±1°16° to 17°±10%90% to 100% chance
Tuemodels agree15° to 16°±57%43% to 100% chance
Wed±1°14° to 15°±8%0% to 8% 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 Letchworth Garden City

today, local time
Sunrise
07:41
Sunset
17:48
Daylight
10h 7m

Common questions

What's the weather in Letchworth Garden City today?
Saturday 24 October: Met Office, the European and the American model agree on a high near 15° in Letchworth Garden City today. Tomorrow: partly cloudy, around 12°, with a 100% chance of rain. The forecast on this page refreshes live.
Will it rain in Letchworth Garden City today or tomorrow?
The models split on rain in Letchworth Garden City on Sunday 25 October: Met Office 33%, European 62%, American 100%. When they disagree like this, treat any single app's answer with caution. On Saturday 24 October the highest chance of rain from any model is 100%. The hourly strip and the model-by-model rain panel above update live.
Which forecast is most accurate for Letchworth Garden City?
Over the last 30 days, the Met Office model has been the most accurate for Letchworth Garden City (CheckWeather Score 94/100), ahead of the European at 94. We grade every model against the recorded weather. See the UK accuracy scoreboard for the full method.
What is the warmest month in Letchworth Garden City?
August is typically the warmest month in Letchworth Garden City, with average highs around 22°C.
How cold does Letchworth Garden City get?
The coldest month in Letchworth Garden City is February, when overnight lows average about 1°C.
How much rain does Letchworth Garden City get?
Letchworth Garden City sees roughly 614 mm of precipitation a year, with October usually the wettest month.

Nearby

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