Portage, IN 46368 Weather

Porter County3:50 PM CDT41.57°N, 87.18°W

Current conditions

Sunny
68°
Sunny
Feels like 68°
High 70°·Low 47°
WindW 5 mph
Humidity44%
Dew point45°
Cloud cover6%
UV index2 Low
Sunrise7:08 AM
Sunset6:00 PM

Forecast for this hour (no station report in the last two hours)

Forecast

10-day

  • This Afternoon

    Sunny. High near 70, with temperatures falling to around 66 in the afternoon. West southwest wind 0 to 5 mph.

  • Tonight

    Patchy fog after 3am. Clear, with a low around 47. East southeast wind 0 to 5 mph.

  • Thursday

    Patchy fog before 9am. Sunny. High near 69, with temperatures falling to around 65 in the afternoon. North wind 0 to 5 mph.

National Weather Service forecast updated 3 hrs ago.

Hourly

Hourly forecast
  1. Now Sunny 68°
  2. 4 PM Sunny 67°
  3. 5 PM Sunny 66°
  4. 6 PM Clear 63°
  5. 7 PM Clear 58°
  6. 8 PM Mostly Clear 56°
  7. 9 PM Mostly Clear 54°
  8. 10 PM Clear 52°
  9. 11 PM Clear 50°
  10. Thu12 AM Clear 49°
  11. 1 AM Clear 49°
  12. 2 AM Clear 49°
  13. 3 AM Patchy Fog 49°
  14. 4 AM Patchy Fog 48°
  15. 5 AM Patchy Fog 48°
  16. 6 AM Patchy Fog 48°
  17. 7 AM Patchy Fog 48°
  18. 8 AM Patchy Fog 50°
  19. 9 AM Sunny 55°
  20. 10 AM Sunny 61°
  21. 11 AM Sunny 64°
  22. 12 PM Sunny 66°
  23. 1 PM Sunny 68°
  24. 2 PM Sunny 68°

10-day forecast

Details
  1. TodayOct 21 Sunny Sunny47°70°
  2. ThuOct 22 Patchy Fog then Sunny Patchy Fog then Sunny44°69°
  3. FriOct 23 Sunny Sunny47°71°
  4. SatOct 24 Mostly Sunny Mostly Sunny50°71°
  5. SunOct 25 Mostly Sunny Mostly Sunny51°72°
  6. MonOct 26 Partly Sunny Partly Sunny14%48°66°
  7. TueOct 27 Slight Chance Rain Showers Slight Chance Rain Showers19%44°58°
  8. WedOct 28 Cloudy Cloudy53°65°
  9. ThuOct 29 Rain Rain0.23 in47°64°
  10. FriOct 30 Sunny Sunny41°56°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
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Weather news in Indiana

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Air quality

67
Moderate
Fine particles (PM2.5)

Acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Forecast

  • WedModerate
  • ThuModerate
  • FriModerate

Hammond-Gary, IN reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:08 AM
Sunset 6:00 PM
Daylight 10 h 51 min (−2 min 37 s tomorrow)
Waxing Gibbous · 80% lit
Moonrise 3:43 PM Moonset 2:06 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low61° / 39°
Record high84° (2003)
Record low23° (1974)
Wettest1.03 in (1984)
Month to date1.05 in (normal 2.44 in)

Wanatah 2 Wnw, records since 1961. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in LOT, issued 3 hrs ago

Key Messages

- The dry and unseasonably mild weather will continue through the upcoming weekend.

Discussion

Issued at 157 AM CDT Wed Oct 21 2026

GOES nighttime microphysics RGB shows fog developing across Lake County IL into extreme southeast WI. Given the fog is developing a couple hours earlier than last night and with similarly favorable conditions to early Tuesday morning, seems likely that dense fog will continue to develop and expand through sunrise. The northern and northwest suburbs seem most likely for dense fog development, but given the low dewpoint depressions, calm winds, and clear skies, fog will probably expand south into the heart of the metro too, though confidence is low in how far south it develops. A dense fog advisory will likely be issued sooner rather than later and will probably need to be expanded as fog expands. Similar to Tuesday morning, fog should burn off by around 14z.

Very little day to day change in the weather is expected through the upcoming weekend. A very weak southwest gradient today may limit the inland penetration of the lake breeze this afternoon compared to Tuesday. This would have implications on areal coverage of fog tonight, as the added moisture from the marine layer has been contributing to the fog development. Temperatures will likely be a couple degrees warmer today.

Another weak surface high will track across the upper Great Lakes in SE Canada Thursday into Friday, likely resulting in a very weak easterly gradient favoring a deeper inland penetration of the weak lake breeze Thursday and possibly Friday as well. This could tee things up for a bit more areal coverage of dense fog Fri and Sat morning.

The omega block and the amplitude of the upper ridge is still progged to break down early next week which at least opens the door to the possibility of a cold frontal passage and perhaps some rain at some point early next week. Medium range guidance often struggles with the breaking down of blocking patterns and there is still considerable ensemble spread, so the magnitude and timing of any potential return to more seasonable temperatures is still a low confidence item. As is any potential increase in rain chances.

- Izzi

Aviation

Issued at 1217 PM CDT Wed Oct 21 2026

Expect generally VFR conditions with a few mid-level clouds through the period as high pressure drifts over the area. However, as has been observed during the past few mornings, MIFG/BCFG is likely at RFD/DPA and VFR BR is possible at ORD late tonight through sunrise Thursday.

Light SW winds are expected this afternoon, though a weak lake breeze may wash out and turn winds SE 5 knots or less over ORD and especially MDW toward sunset. Winds will become calm or light and VRB tonight into Thursday morning, with a lake- enhanced NE wind shift likely by Thursday afternoon.

Kluber

Lot Watches

IL...None. IN...None. LM...None.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.