See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
22°
Mostly Cloudy
Feels Like: 23°
Min: 11°
Max: 23°
The next few hours will be overcast, with today reaching 23°C and dropping to 12°C. The coming days will be mostly cloudy
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:22
Sunrise
18:42
Sunset
Moon
Waxing Crescent
13:06
Moonrise
20:01
Moonset
Daily Forecast
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Thursday
Friday
Saturday
Sunday
Monday
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Weather in Olsztyn today, September 16, 2026
Olsztyn looks damp on September 16, 2026, so plan for wet spells during the day. Early travel and outdoor time should assume rain can arrive quickly.
Temperatures climb from an overnight low near 11°C toward a daytime high of about 23°C. Expect humidity between 59% and 94%, most humid near 22:00. Expect gentle winds, highest near 13:00 at 4.1 km/h.
Expect the wet theme to continue later, as rain odds reach 92% near 21:00. Cloud amounts hold near 100% around 14:00. Horizontal visibility sits around 30.9 km, briefly nearer 8.4 km. Sunrise is at 06:22 and sunset at 18:42, giving 12 hours 19 minutes of sunlight today.
In short, treat September 16, 2026 in Olsztyn as a damp day: pack covers, watch the wetter hours, and expect a high near 23°C.
Frequently asked questions about weather in Olsztyn
How warm does it get in Olsztyn?
The warmest month in Olsztyn is August, with average high temperatures of 23°C. The average temperature during this period is around 19°C.
How cold does it get in Olsztyn?
The coldest month in Olsztyn is January, with average low temperatures of -3°C. The average temperature during this period is around -1°C.
What is the wettest time of year in Olsztyn?
The wettest month in Olsztyn is July, with an average of 95mm of precipitation.
What is the driest time of year in Olsztyn?
The driest month in Olsztyn is April, with an average of 39mm of precipitation.
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