Weather in St Johns Today
Current temperature in St Johns: 11°C (52°F). Mainly Clear. Today's high 18°C (64°F), low 6°C (43°F).
Today's Daylight Forecast
Moon & Islamic Calendar
High UV apply sunscreen before heading out. A hat or sun umbrella is recommended during peak hours.
5-Day Weather Forecast
Full 15-Day ForecastAtmospheric Details
Today vs Normal
The long-term average high for today is 18°C.
15 of the last 19 days with published data ran above normal.
That's a break from the pattern - today's forecast runs below normal even though the recent stretch mostly ran above.
Red = above normal, blue = at or below · last 12 days
Air Quality
Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.
Health & Activity Advice
UV index is 6 today — high. Apply sunscreen before heading out, and consider a hat or shade during peak hours (roughly late morning to mid-afternoon).
Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.
Morning before 10 AM or evening after 4 PM is the more comfortable window for outdoor activity today.
Nearby Regional Outlook
St Johns Weather Radar
Live precipitation · Cloud cover · Wind
Frequently Asked Questions
What is the hottest month in St Johns?
The hottest month in St Johns is typically January, with daytime highs averaging around 29.7°C (85°F), based on 10 years of historical weather data. Overnight lows during this period average near 15.7°C (60°F).
What is the coldest month in St Johns?
The coldest month in St Johns is typically July, with overnight lows averaging around 6°C (43°F) and daytime highs near 13.2°C (56°F), based on 10 years of historical weather data.
Does St Johns have a rainy season?
St Johns doesn't have a sharply defined rainy season rainfall is fairly spread across the year based on 10 years of historical data. August is the wettest month on average (about 68 mm), while March is the driest (about 17 mm).
What's the best time of year to visit St Johns?
The best time to visit St Johns is typically February to April, when daytime highs average a comfortable 25.4°C (78°F). Rainfall during this window averages around 23 mm, one of the lighter, more comfortable stretches of the year. This is based on 10 years of historical weather data.
Is St Johns's air quality safe right now?
As of the latest reading, St Johns's air quality index (AQI) is 20, rated "Good", based on the nearest monitoring station. Air quality is considered satisfactory, with little to no health risk.