Weather in Ottawa, Illinoys, United States — today, tomorrow and 14-day forecast
Weather in Ottawa now: +17°, partly cloudy, wind 2.3 m/s, humidity 94%. Accurate forecast for today, tomorrow, 3 days and 2 weeks — temperature, precipitation, pressure and wind.
Weather in Ottawa now
Hourly forecast for today in Ottawa
Weather in Ottawa tomorrow
From +19° to +26° — day and night.
Weather in Ottawa for 3 days
From +16° to +26° — day and night.
Weather in Ottawa for the week
Including the 5-day outlook.
From +14° to +26° — day and night.
Weather in Ottawa for 2 weeks
Including the 10-day outlook.
From +14° to +26° — day and night.
Weekend weather in Ottawa
Weather for the weather-sensitive
📒 Weather diary in Ottawa
Ready-made observation table for August: past days are already filled in with weather-station data — for school and beyond. Open the diary →
What to do in Ottawa in weather like this 🎯
✉️ Weather forecast by email
Get the forecast for this city by email — every day at 17:00 Moscow time.
The Moon today 🌙
Ottawa, Illinoys, United States. Population 18 342.
Precipitation map 🌧️
Cities near Ottawa 📍
FAQ about weather in Ottawa ❓
What's the weather in Ottawa right now?
Now +17°, partly cloudy, wind 2.3 m/s, S-W, humidity 94%. Feels like +18°.
What's the weather in Ottawa tomorrow?
Tomorrow: +26° by day, +19° at night, partly cloudy.
Sunrise and sunset in Ottawa?
Sunrise 05:07, sunset 18:53, day length 13h 46m.
What's the pressure and humidity in Ottawa?
Pressure 762 mmHg, humidity 94%, wind 5 m/s. Matters for weather-sensitive people.
Will it rain in Ottawa today?
Yes, rain is expected, precipitation chance —%. Take an umbrella or a raincoat.
Do I need sunscreen in Ottawa?
Yes, the UV index is 8 — high. Use SPF 30+, especially for children; no more than 20-30 minutes in direct sun unprotected.
Do I need rubber boots in Ottawa?
In rain and puddles, rubber boots or waterproof shoes will come in handy.
How long is it safe to stay in the sun in Ottawa?
At UV 8, no more than 20–30 minutes unprotected; longer with SPF 30+ and shade.
Add the “Pogoda 1” weather widget — free
Pick a city, size and color — get ready-to-paste code. Works on any site.
Get the widget →
Weather in Ottawa — in detail
Weather in Ottawa from “Pogoda 1” — an accurate, free forecast: current temperature, feels-like, wind, atmospheric pressure, humidity and precipitation. Available for today, tomorrow, 3, 5 and 10 days, a week, 2 weeks and a month, plus hourly weather, monthly climate, water temperature, air quality and an observation archive since 2017.
To quickly check the weather in Ottawa anytime, add the city to favorites — and get a daily forecast by email at 17:00 (Moscow time). Note: the forecast may be refined as new data arrives. Data: OpenWeather, Open-Meteo, met.no.