Merrimac, WI Weather Forecast
Local 7-day forecast
Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Merrimac, WI in one place.
Rain showers before noon, then rain showers and patchy fog. Cloudy, with a high near 57. East wind around 5 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Local Weather Overview
This forecast page for Merrimac, WI is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Oct 15, 2026 10:37 AM CDT.
The active forecast window currently covers Oct 15 to Oct 21, 2026 for Merrimac, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 10:37 AM CDT
- Forecast office
- MKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Merrimac
Wednesday looks like the warmest upcoming period in Merrimac at 69 degrees F.
Friday Night is the coolest period ahead with temperatures near 30 degrees F.
The strongest winds are forecast for Friday at about 15 to 20 mph NW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 10:37 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- MKX
- Radar station
- KMKX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Rain showers and patchy fog before 2am. Cloudy, with a low around 44. Northwest wind 5 to 15 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
A chance of rain showers between 7am and 1pm. Mostly cloudy, with a high near 53. Northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Widespread frost after 1am. Mostly clear, with a low around 30. North wind 0 to 15 mph.
Widespread frost before 9am. Sunny, with a high near 57. Northwest wind 0 to 10 mph.
Clear, with a low around 38. Southwest wind 10 to 15 mph.
Sunny, with a high near 63. Southwest wind around 15 mph, with gusts as high as 30 mph.
Mostly clear, with a low around 41. Southwest wind 5 to 10 mph.
Mostly sunny, with a high near 66.
Mostly clear, with a low around 41.
Sunny, with a high near 68.
Mostly clear, with a low around 43.
Mostly sunny, with a high near 69.
A chance of rain showers after 7pm. Partly cloudy, with a low around 48. Chance of precipitation is 30%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Oct 15
|
Rain Showers
|
57°F |
5 mph
E
|
|
Tonight
Oct 15
|
Rain Showers
|
44°F |
5 to 15 mph
NW
|
|
Friday
Oct 16
|
Chance Rain Showers
|
53°F |
15 to 20 mph
NW
|
|
Friday Night
Oct 16
|
Mostly Clear then Widespread Frost
|
30°F |
0 to 15 mph
N
|
|
Saturday
Oct 17
|
Widespread Frost then Sunny
|
57°F |
0 to 10 mph
NW
|
|
Saturday Night
Oct 17
|
Clear
|
38°F |
10 to 15 mph
SW
|
|
Sunday
Oct 18
|
Sunny
|
63°F |
15 mph
SW
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
41°F |
5 to 10 mph
SW
|
|
Monday
Oct 19
|
Mostly Sunny
|
66°F |
0 to 5 mph
SW
|
|
Monday Night
Oct 19
|
Mostly Clear
|
41°F |
0 to 5 mph
W
|
|
Tuesday
Oct 20
|
Sunny
|
68°F |
0 to 5 mph
SE
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
43°F |
0 to 5 mph
SE
|
|
Wednesday
Oct 21
|
Mostly Sunny
|
69°F |
0 to 10 mph
S
|
|
Wednesday Night
Oct 21
|
Chance Rain Showers
|
48°F |
5 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Merrimac.