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Mercer WI Weather - Overcast - 64°F
Overcast
64°F
Updated 3:48 pm
Feels Like 62°F
Humidity 68%
Wind N 9 mph
Barometer  30.27 in
Dew Point 54°F
Mercer WI Weather - Overcast - 18°C
Overcast
18°C
Updated 3:48 pm
Feels Like 17°C
Humidity 68%
Wind N 14 km/h
Barometer  102.5 kPa
Dew Point 12°C
Mercer, WI Weather and Current Conditionsmercer wi weather forecast

Mercer, WI Weather Forecast

Mercer Wisconsin WeatherMercer, Wisconsin Weather Weather Forecast
14 day API forecast for Mercer, Wisconsin. Note. The 7-day weather forecast for Mercer, WI is the most reliable and accurate forecast. This model should only be used as a likely scenario. It is difficult to predict weather more than 7 days in advance.
Mercer, WI Weather Forecast Dated: 348 PM Thu Sep 17 2026
Expect a cool pattern with more clouds than sun and frequent chances of rain over the coming period. generally humid conditions and no major pressure swings will dominate.

Thursday, September 17, 2026

Mid-Morning
Mercer Weather - 2026-09-17 - Morning - Partly Cloudy
53°F 11°C
Partly Cloudy
Mid-Afternoon
Mercer Weather - 2026-09-17 - Afternoon - Overcast
66°F 19°C
Overcast
Early-Evening
Mercer Weather - 2026-09-17 - Evening - Overcast
60°F 16°C
Overcast
Refreshing around 66°F 19°C, partly cloudy in the morning, overcast in the afternoon, and cloudy this evening, with lower humidity and steady pressure.

Friday, September 18, 2026

Mid-Morning
Mercer Weather - 2026-09-18 - Morning - Overcast
50°F 10°C
Overcast
Mid-Afternoon
Mercer Weather - 2026-09-18 - Afternoon - Light Rain
51°F 10°C
Light Rain
Early-Evening
Mercer Weather - 2026-09-18 - Evening - Light Showers
49°F 10°C
Light Showers
Cool and brisk at 51°F 10°C, clouds and showers taking over for the afternoon and evening, with increasing humidity and steady pressure.

Saturday, September 19, 2026

Mid-Morning
Mercer Weather - 2026-09-19 - Morning - Scattered Showers
47°F 8°C
Scattered Showers
Mid-Afternoon
Mercer Weather - 2026-09-19 - Afternoon - Fog
48°F 9°C
Fog
Early-Evening
Mercer Weather - 2026-09-19 - Evening - Fog
48°F 9°C
Fog
Chilly near 48°F 9°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds turning from the E to the NE at 8 mph 12 km/h. Gusts up to 21 mph 33 km/h.

Sunday, September 20, 2026

Mid-Morning
Mercer Weather - 2026-09-20 - Morning - Overcast
48°F 9°C
Overcast
Mid-Afternoon
Mercer Weather - 2026-09-20 - Afternoon - Overcast
61°F 16°C
Overcast
Early-Evening
Mercer Weather - 2026-09-20 - Evening - Overcast
53°F 12°C
Overcast
Cool with a high near 61°F 16°C, overcast throughout the day, with lower humidity and steady pressure. Winds blowing from the ENE at 9 mph 14 km/h.

Monday, September 21, 2026

Mid-Morning
Mercer Weather - 2026-09-21 - Morning - Overcast
44°F 7°C
Overcast
Mid-Afternoon
Mercer Weather - 2026-09-21 - Afternoon - Light Rain
46°F 8°C
Light Rain
Early-Evening
Mercer Weather - 2026-09-21 - Evening - Light Showers
46°F 8°C
Light Showers
Brisk around 46°F 8°C, clouds and showers taking over for the afternoon and evening, with increasing humidity and barometric pressure falling. Winds moving from the E to the NE at 10 mph 16 km/h. Gusts up to 25 mph 40 km/h.

Tuesday, September 22, 2026

Mid-Morning
Mercer Weather - 2026-09-22 - Morning - Drizzle
44°F 7°C
Drizzle
Mid-Afternoon
Mercer Weather - 2026-09-22 - Afternoon - Scattered Showers
50°F 10°C
Scattered Showers
Early-Evening
Mercer Weather - 2026-09-22 - Evening - Scattered Showers
49°F 10°C
Scattered Showers
Cool and brisk at 50°F 10°C, locally heavy downpours at times, with steady humidity and steady pressure.

Wednesday, September 23, 2026

Mid-Morning
Mercer Weather - 2026-09-23 - Morning - Fog
48°F 9°C
Fog
Mid-Afternoon
Mercer Weather - 2026-09-23 - Afternoon - Light Rain
52°F 11°C
Light Rain
Early-Evening
Mercer Weather - 2026-09-23 - Evening - Scattered Showers
47°F 8°C
Scattered Showers
Chilly near 52°F 11°C, periods of heavy rain and gusty conditions, with lower humidity and barometric pressure falling. Winds swinging from the SSE to the WSW at 15 mph 23 km/h. Gusts up to 31 mph 49 km/h.

Thursday, September 24, 2026

Mid-Morning
Mercer Weather - 2026-09-24 - Morning - Scattered Showers
43°F 6°C
Scattered Showers
Mid-Afternoon
Mercer Weather - 2026-09-24 - Afternoon - Scattered Showers
49°F 9°C
Scattered Showers
Early-Evening
Mercer Weather - 2026-09-24 - Evening - Scattered Showers
51°F 11°C
Scattered Showers
Crisp with a high near 49°F 9°C, scattered downpours possible, with lower humidity and barometric pressure rising. Winds shifting from the WNW to the NW at 11 mph 18 km/h. Gusts up to 27 mph 44 km/h.

Friday, September 25, 2026

Mid-Morning
Mercer Weather - 2026-09-25 - Morning - Sunny
44°F 7°C
Sunny
Mid-Afternoon
Mercer Weather - 2026-09-25 - Afternoon - Sunny
53°F 12°C
Sunny
Early-Evening
Mercer Weather - 2026-09-25 - Evening - Sunny
52°F 11°C
Sunny
Brisk around 53°F 12°C, sunny throughout the day, with lower humidity and steady pressure. Winds turning from the NW to the W at 5 mph 8 km/h.

Saturday, September 26, 2026

Mid-Morning
Mercer Weather - 2026-09-26 - Morning - Sunny
50°F 10°C
Sunny
Mid-Afternoon
Mercer Weather - 2026-09-26 - Afternoon - Sunny
64°F 18°C
Sunny
Early-Evening
Mercer Weather - 2026-09-26 - Evening - Sunny
62°F 16°C
Sunny
Mildly cool near 64°F 18°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds switching from the SW to the SSW at 9 mph 13 km/h. Gusts up to 24 mph 39 km/h.

Sunday, September 27, 2026

Mid-Morning
Mercer Weather - 2026-09-27 - Morning - Sunny
57°F 14°C
Sunny
Mid-Afternoon
Mercer Weather - 2026-09-27 - Afternoon - Overcast
65°F 18°C
Overcast
Early-Evening
Mercer Weather - 2026-09-27 - Evening - Overcast
62°F 17°C
Overcast
Comfortable at 65°F 18°C, cloudy in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds blowing from the SSW at 15 mph 23 km/h. Gusts up to 35 mph 57 km/h.

Monday, September 28, 2026

Mid-Morning
Mercer Weather - 2026-09-28 - Morning - Sunny
59°F 15°C
Sunny
Mid-Afternoon
Mercer Weather - 2026-09-28 - Afternoon - Sunny
72°F 22°C
Sunny
Early-Evening
Mercer Weather - 2026-09-28 - Evening - Sunny
67°F 20°C
Sunny
Comfortable with temperatures reaching 72°F 22°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and steady pressure. Winds swinging from the WSW to the NNW at 6 mph 9 km/h.

Tuesday, September 29, 2026

Mid-Morning
Mercer Weather - 2026-09-29 - Morning - Overcast
51°F 10°C
Overcast
Mid-Afternoon
Mercer Weather - 2026-09-29 - Afternoon - Scattered Showers
43°F 6°C
Scattered Showers
Early-Evening
Mercer Weather - 2026-09-29 - Evening - Scattered Showers
46°F 8°C
Scattered Showers
Nippy around 43°F 6°C, periods of heavy rain and gusty conditions, with increasing humidity and barometric pressure rising. Winds shifting from the WSW to the NNW at 4 mph 6 km/h.

Wednesday, September 30, 2026

Mid-Morning
Mercer Weather - 2026-09-30 - Morning - Sunny
44°F 7°C
Sunny
Mid-Afternoon
Mercer Weather - 2026-09-30 - Afternoon - Overcast
52°F 11°C
Overcast
Early-Evening
Mercer Weather - 2026-09-30 - Evening - Overcast
49°F 9°C
Overcast
Cool and brisk at 52°F 11°C, partly cloudy in the morning, becoming overcast through the afternoon and evening, with lower humidity and steady pressure.

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Weather by the Numbers

Thu, 17th
Mercer WI Weather - Thursday, Sep 17, 2026 - Cloudy
Hi: 66°F 19°C
Lo: 49°F 9°C
Sunrise 06:42 AM
Sunset 07:08 PM
Wind NNW 4 mph7 km/h
Dew Point 48°F9°C
uv Index 5
Barometric Pressure 30.27 in1025 mb
POP 11% *
Humidity 58%
Fri, 18th
Mercer WI Weather - Friday, Sep 18, 2026 - Patchy Rain Nearby
Hi: 57°F 14°C
Lo: 47°F 8°C
Sunrise 06:43 AM
Sunset 07:06 PM
Wind SE 7 mph11 km/h
Dew Point 48°F9°C
uv Index 1
Barometric Pressure 30.3 in1026 mb
POP 37% *
Humidity 86%
Sat, 19th
Mercer WI Weather - Saturday, Sep 19, 2026 - Fog
Hi: 55°F 13°C
Lo: 43°F 6°C
Sunrise 06:44 AM
Sunset 07:04 PM
Wind ENE 7 mph12 km/h
Dew Point 48°F9°C
uv Index 1
Barometric Pressure 29.97 in1015 mb
POP 43% *
Humidity 98%
Sun, 20th
Mercer WI Weather - Sunday, Sep 20, 2026 - Overcast
Hi: 61°F 16°C
Lo: 42°F 6°C
Sunrise 06:45 AM
Sunset 07:02 PM
Wind NE 10 mph16 km/h
Dew Point 36°F2°C
uv Index 5
Barometric Pressure 30.12 in1020 mb
POP 11% *
Humidity 46%
Mon, 21st
Mercer WI Weather - Monday, Sep 21, 2026 - Overcast
Hi: 53°F 12°C
Lo: 41°F 5°C
Sunrise 06:47 AM
Sunset 07:00 PM
Wind E 7 mph12 km/h
Dew Point 39°F4°C
uv Index 3
Barometric Pressure 30.27 in1025 mb
POP 14% *
Humidity 58%
Tue, 22nd
Mercer WI Weather - Tuesday, Sep 22, 2026 - Fog
Hi: 51°F 11°C
Lo: 44°F 6°C
Sunrise 06:48 AM
Sunset 06:58 PM
Wind NE 4 mph6 km/h
Dew Point 45°F7°C
uv Index 2
Barometric Pressure 30 in1016 mb
POP 33% *
Humidity 94%
Wed, 23rd
Mercer WI Weather - Wednesday, Sep 23, 2026 - Light Rain
Hi: 52°F 11°C
Lo: 43°F 6°C
Sunrise 06:49 AM
Sunset 06:56 PM
Wind S 13 mph20 km/h
Dew Point 50°F10°C
uv Index 3
Barometric Pressure 29.68 in1005 mb
POP 82% *
Humidity 98%
Thu, 24th
Mercer WI Weather - Thursday, Sep 24, 2026 - Patchy Rain Nearby
Hi: 51°F 11°C
Lo: 42°F 5°C
Sunrise 06:51 AM
Sunset 06:54 PM
Wind WNW 14 mph23 km/h
Dew Point 40°F5°C
uv Index 2
Barometric Pressure 29.8 in1009 mb
POP 40% *
Humidity 89%
Fri, 25th
Mercer WI Weather - Friday, Sep 25, 2026 - Sunny
Hi: 54°F 12°C
Lo: 40°F 5°C
Sunrise 06:52 AM
Sunset 06:52 PM
Wind NNW 10 mph16 km/h
Dew Point 30°F-1°C
uv Index 4
Barometric Pressure 30.06 in1018 mb
POP 2% *
Humidity 46%
Sat, 26th
Mercer WI Weather - Saturday, Sep 26, 2026 - Sunny
Hi: 64°F 18°C
Lo: 46°F 8°C
Sunrise 06:53 AM
Sunset 06:50 PM
Wind SW 9 mph14 km/h
Dew Point 41°F5°C
uv Index 5
Barometric Pressure 30.12 in1020 mb
POP 2% *
Humidity 51%
Sun, 27th
Mercer WI Weather - Sunday, Sep 27, 2026 - Cloudy
Hi: 66°F 19°C
Lo: 55°F 13°C
Sunrise 06:54 AM
Sunset 06:48 PM
Wind SSW 14 mph22 km/h
Dew Point 44°F6°C
uv Index 4
Barometric Pressure 29.85 in1011 mb
POP 10% *
Humidity 49%
Mon, 28th
Mercer WI Weather - Monday, Sep 28, 2026 - Sunny
Hi: 72°F 22°C
Lo: 56°F 13°C
Sunrise 06:56 AM
Sunset 06:46 PM
Wind WNW 9 mph14 km/h
Dew Point 52°F11°C
uv Index 5
Barometric Pressure 29.83 in1010 mb
POP 3% *
Humidity 58%
Tue, 29th
Mercer WI Weather - Tuesday, Sep 29, 2026 - Overcast
Hi: 61°F 16°C
Lo: 43°F 6°C
Sunrise 06:57 AM
Sunset 06:45 PM
Wind SE 8 mph13 km/h
Dew Point 35°F2°C
uv Index 2
Barometric Pressure 30.18 in1022 mb
POP 17% *
Humidity 67%
Wed, 30th
Mercer WI Weather - Wednesday, Sep 30, 2026 - Partly Cloudy
Hi: 53°F 11°C
Lo: 42°F 5°C
Sunrise 06:58 AM
Sunset 06:43 PM
Wind NE 5 mph8 km/h
Dew Point 28°F-2°C
uv Index 4
Barometric Pressure 30.33 in1027 mb
POP 8% *
Humidity 44%
* POP = Probability of Precipitation. Data for 12:00 PM.