Posen Weather Forecast 15 Days, Weather in Posen Today

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5. Weather in Posen for 15 days

Current weather conditions and 15 day weather forecast for Posen, Illinois, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.

Current weather conditions at Posen

23 December 2025 Tuesday 5 ° C / 41°F Overcast

Feels Like : 1.6 ° C / 34.9°F Humidity : % 65 Pressure : 1017 mb Wind Speed : 15.8 kmph / 9.8 miles from S Visibility : 16 km Precipitation (rainfall) : 0.02 mm Cloud (%) : 100

15 day weather forecast for Posen, IL, USA

Weather Forecast for next 15 Days for Posen including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.
Here is weather for the next 15 days in Posen, Illinois state, US. To see the daily forecast, scroll to the table below.

Date	Weather forecast	Low temperature	High temperature	Avg. temperature	Humidity	Chance of rain	UV Index	Sun Position	Moon Position
22 December 2025 Monday	Sunny	-2.8 ° C (27°F)	10.9 ° C (51.6°F)	3.2 ° C (37.7°F)	% 55	0%	0.2	Sunrise:07:15 AM Sunset: 04:25 PM	Moonrise:09:28 AM Moonset: 06:50 PM Moon Phase ( Waxing Crescent )
23 December 2025 Tuesday	Overcast	0.9 ° C (33.6°F)	8 ° C (46.4°F)	3.3 ° C (37.9°F)	% 93	0%	0.3	Sunrise:07:16 AM Sunset: 04:25 PM	Moonrise:09:58 AM Moonset: 07:57 PM Moon Phase ( Waxing Crescent )
24 December 2025 Wednesday	Mist	-0.2 ° C (31.6°F)	0.6 ° C (33.1°F)	0.2 ° C (32.4°F)	% 97	0%	0.2	Sunrise:07:16 AM Sunset: 04:26 PM	Moonrise:10:23 AM Moonset: 09:05 PM Moon Phase ( Waxing Crescent )
25 December 2025 Thursday	Overcast	0.5 ° C (32.9°F)	2.2 ° C (36°F)	1.4 ° C (34.6°F)	% 93	0%	0.3	Sunrise:07:16 AM Sunset: 04:26 PM	Moonrise:10:45 AM Moonset: 10:13 PM Moon Phase ( Waxing Crescent )
26 December 2025 Friday	Moderate rain	2.6 ° C (36.6°F)	5.7 ° C (42.3°F)	3.4 ° C (38.2°F)	% 90	81%	0.1	Sunrise:07:17 AM Sunset: 04:27 PM	Moonrise:11:07 AM Moonset: 11:22 PM Moon Phase ( Waxing Crescent )
27 December 2025 Saturday	Fog	2.5 ° C (36.5°F)	10.9 ° C (51.6°F)	5 ° C (40.9°F)	% 92	0%	0	Sunrise:07:17 AM Sunset: 04:28 PM	Moonrise:11:28 AM Moonset: No moonset Moon Phase ( First Quarter )
28 December 2025 Sunday	Sunny	-5.4 ° C (22.3°F)	-0.7 ° C (30.8°F)	-1.7 ° C (28.9°F)	% 46	0%	2	Sunrise:07:17 AM Sunset: 04:28 PM	Moonrise:11:51 AM Moonset: 12:32 AM Moon Phase ( Waxing Gibbous )
29 December 2025 Monday	Sunny	-8.5 ° C (16.7°F)	-5.3 ° C (22.5°F)	-7.1 ° C (19.3°F)	% 40	0%	2	Sunrise:07:18 AM Sunset: 04:29 PM	Moonrise:12:17 PM Moonset: 01:46 AM Moon Phase ( Waxing Gibbous )
30 December 2025 Tuesday	Sunny	-8.1 ° C (17.5°F)	-2 ° C (28.4°F)	-5.3 ° C (22.4°F)	% 49	0%	2	Sunrise:07:18 AM Sunset: 04:30 PM	Moonrise:12:50 PM Moonset: 03:04 AM Moon Phase ( Waxing Gibbous )
31 December 2025 Wednesday	Partly Cloudy	-3.4 ° C (25.8°F)	2.3 ° C (36.1°F)	-0.4 ° C (31.2°F)	% 63	0%	2	Sunrise:07:18 AM Sunset: 04:31 PM	Moonrise:01:32 PM Moonset: 04:25 AM Moon Phase ( Waxing Gibbous )
01 January 2026 Thursday	Sunny	0.3 ° C (32.6°F)	8.2 ° C (46.7°F)	4 ° C (39.2°F)	% 73	0%	2	Sunrise:07:18 AM Sunset: 04:32 PM	Moonrise:02:26 PM Moonset: 05:44 AM Moon Phase ( Waxing Gibbous )
02 January 2026 Friday	Partly Cloudy	1.6 ° C (34.9°F)	6.7 ° C (44.1°F)	4.8 ° C (40.7°F)	% 81	0%	2	Sunrise:07:18 AM Sunset: 04:33 PM	Moonrise:03:34 PM Moonset: 06:54 AM Moon Phase ( Waxing Gibbous )
03 January 2026 Saturday	Sunny	-5.3 ° C (22.4°F)	-2.5 ° C (27.5°F)	-2.9 ° C (26.7°F)	% 46	0%	2	Sunrise:07:18 AM Sunset: 04:33 PM	Moonrise:04:50 PM Moonset: 07:52 AM Moon Phase ( Full Moon )
04 January 2026 Sunday	Sunny	-7.1 ° C (19.3°F)	-1.7 ° C (29°F)	-4.5 ° C (23.9°F)	% 46	0%	2	Sunrise:07:18 AM Sunset: 04:34 PM	Moonrise:06:09 PM Moonset: 08:37 AM Moon Phase ( Waning Gibbous )

Posen Weather forecasts are usually fully updated every 4 hours.

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