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Casselberry weather

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Casselberry weather alerts and warnings

active National Weather Service watches, warnings and advisories

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Casselberry weather in numbers

measured normals and 10 years of recorded weather

Casselberry swings 39°F across the year, from 88°F highs in August to 49°F lows in January, and August is usually the wettest month in a year that brings about 54 in of precipitation. Over 10 years of recorded weather it averages 271 days a year at 77°F or above, 130 of them at 86°F or above, 1 frost night, and rain on 173 days.

Warmest month
August
88°F average high
Coldest month
January
49°F average low
Wettest month
August
54 in a year
Comfortable
4 months
January, February, March and November
Residents
27,000
share this forecast
Most accurate here
European
95/100 CheckWeather Score
Warm days
271 days
a year at 77°F or above
Frost nights
1 night
a year below 32°F
Rain days
173 days
a year with 0.04 in or more

Day counts are from the ERA5 reanalysis for Casselberry’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

NWS, American, European side by side around Casselberry and nearby towns.Live rain radar →
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Casselberry 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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Casselberry 10-day forecast, out to 14 days

where the models agree, and where they split

Casselberry, Florida (FL) is at its warmest in Aug (average highs near 88°F) and coldest in Jan (lows around 49°F), with roughly 54 in of precipitation across the year. Below, compare what NWS, American, European forecast for Casselberry 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.

Casselberry climate by month

average daytime high and overnight low across a typical year (1991-2020)
Jan
69°
49°
Feb
73°
51°
Mar
76°
55°
Apr
81°
60°
May
86°
66°
Jun
87°
70°
Jul
87°
71°
Aug
88°
72°
Sep
86°
70°
Oct
82°
66°
Nov
75°
58°
Dec
70°
54°

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

How the weather around Casselberry has changed since 1995

Casselberry sits in the same roughly 50 km square of NASA's reanalysis as Orlando. That square ran 1.8°F warmer in 2015-2024 than in 1995-2004. See the full 30-year picture on the Orlando page.

Which forecast is most accurate in Casselberry?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
95
/100rank #1
95±0.5°F96±1.3 mph9597% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
70
/100rank #2
81±1.9°F93±2.2 mph4268% 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 Casselberry today?
On this page we show what NWS, American, European each forecast for Casselberry 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 Casselberry today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Casselberry 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 Casselberry?
Over the last 30 days, the European model has been the most accurate for Casselberry (CheckWeather Score 95/100), ahead of the American at 70. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Casselberry?
August is typically the warmest month in Casselberry, with average highs around 88°F.
How cold does Casselberry get?
The coldest month in Casselberry is January, when overnight lows average about 49°F.
How much rain does Casselberry get?
Casselberry sees roughly 54 in of precipitation a year, with August usually the wettest month.

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