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CheckWeather USSt. Petersburg
Forecast confidence: High · models disagree by 4°F

St. Petersburg weather

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Light drizzle,rain likely tomorrow

NWS, the American and the European model agree on a high near 91° in St. Petersburg today. Tomorrow looks heavy drizzle around 89°, with a 71% chance of rain.

91°78°
89°79°
87°77°
89°78°
90°78°
89°78°
Todaymodels agreeTomorrowmodels agreeMondaymodels agreeTuesdaysplit ±5°Wednesdaysplit ±6°Thursdaysplit ±5°
NWSNational Blend (NBM)
90°
Light drizzle
Today 90°·Low 79°·Rain 15%
AmericanNOAA GFS
89°
Cloudy
Today 89°·Low 78°·Rain 15%
EuropeanECMWF
93°
Light drizzle
Today 93°·Low 77°·Rain 63%

The weather map: all three models at once

NWS, American, European side by side around St. Petersburg and nearby towns.Live rain radar →
Loading the three model maps…

Next 14 hours

consensus of the three models

14-day forecast

where the models agree, and where they split
Today
Light drizzle
91° 78°
models agree
Tomorrow
Heavy drizzle
89° 79°
models agree
Mon
Light drizzle
87° 77°
models agree
Tue
Drizzle
89° 78°
±5°
Wed
Light drizzle
90° 78°
±6°
Thu
Thunderstorm
89° 78°
±5°
Fri
Light drizzle
88° 80°
±6°
Sat
Partly cloudy
90° 80°
±7°
Sun
Thunderstorm
92° 79°
±7°
Mon
Light drizzle
90° 79°
±8°
Tue
Drizzle
89° 78°
±5°
Wed
Drizzle
89° 78°
±5°
Thu
Cloudy
87° 78°
±4°
Fri
Cloudy
88° 75°
±7°

St. Petersburg, FL is at its warmest in Jul (average highs near 91°F) and coldest in Jan (lows around 55°F), with roughly 44 in of precipitation across the year. Below, compare what NWS, American, European forecast for St. Petersburg 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.

St. Petersburg climate by month

average daytime high and overnight low across a typical year
Jan
68°
55°
Feb
72°
58°
Mar
77°
63°
Apr
81°
67°
May
87°
73°
Jun
88°
76°
Jul
91°
79°
Aug
89°
79°
Sep
88°
76°
Oct
83°
69°
Nov
78°
64°
Dec
71°
57°

Which forecast is most accurate in St. Petersburg?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
76
/100rank #1
85±1.5°F93±2.3 mph5374% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
63
/100rank #2
84±1.6°F94±2.0 mph1855% 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.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±4°89° to 93°±48%15% to 63% chance
Tomorrow±4°87° to 91°±53%18% to 71% chance
Mon±1°86° to 87°±42%42% to 84% chance
Tue±5°87° to 92°±30%63% to 93% chance
Wed±6°88° to 94°±32%57% to 89% 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 St. Petersburg

today, local time
Sunrise
07:11
Sunset
19:47
Daylight
12h 36m

Common questions

What's the weather in St. Petersburg today?
On this page we show what NWS, American, European each forecast for St. Petersburg 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 St. Petersburg today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for St. Petersburg 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 St. Petersburg?
Over the last 30 days, the European model has been the most accurate for St. Petersburg (CheckWeather Score 76/100), ahead of the American at 63. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in St. Petersburg?
July is typically the warmest month in St. Petersburg, with average highs around 91°F.
How cold does St. Petersburg get?
The coldest month in St. Petersburg is January, when overnight lows average about 55°F.
How much rain does St. Petersburg get?
St. Petersburg sees roughly 44 in of precipitation a year, with October usually the wettest month.

Nearby

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