Blue Island weather
At 7:15 PM local time it was cloudy and 14°C (57°F). Mostly light, on-and-off rain; heavier around 3 AM (1.4 mm total). Best months for weather: May–Sep. Blue Island sits 197 m (646 ft) above sea level, which keeps it cooler than the coast. Below: today's sky, the hour-by-hour rain chance and the 16-day forecast for Blue Island, Illinois, United States.
Current conditions
- Clouds
- 100%
- Chance of rain
- 5%
- Rain
- 0.0 mm/h
Hourly Forecast
Mostly light, on-and-off rain; heavier around 3 AM (1.4 mm total)
Daily Forecast
Best Time to Visit
Peak season May–SepOff season Nov–Mar
About Blue Island weather
Is it raining in Blue Island right now?
No. It’s cloudy and 14° right now. Mostly light, on-and-off rain; heavier around 3 AM (1.4 mm total).
What’s the weather like in Blue Island this week?
Over the next 7 days, expect highs of 12–21° and lows of 9–15°. Rain is likely on 6 of 7 days (Sunday, Monday, Tuesday, Wednesday, Thursday, Friday). The driest day looks like Sunday.
Has it been raining in Blue Island lately?
Barely. The past 7 days were mostly dry, with 0.0 mm of rain in total.
What should I pack for Blue Island?
For the coming week, bring an umbrella or rain jacket and a warm layer for the evenings.
Blue Island weather by month
When is the best time to visit Blue Island?
Based on weather alone, the best time to visit Blue Island is May–Sep, according to NASA's 2001–2025 climate averages. Nov–Mar tends to be the least pleasant. Average highs run from 0°C (31°F) in January to 28°C (83°F) in July.
What is the rainiest month in Blue Island?
May is the wettest month, with about 112 mm (4.4 in) of rain on average. January is the driest, with about 51 mm (2.0 in).
What is the hottest month in Blue Island?
July is the warmest, with average highs of 28°C (83°F) and lows of 19°C (65°F). January is the coolest, with highs of 0°C (31°F) and lows of -8°C (18°F).
Does Blue Island have a rainy season?
Not a strong one. No month averages more than 150 mm of rain; the wettest is May at about 112 mm (4.4 in).
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), forecast and current conditions from Open-Meteo. Page updated . How we rate months