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Observed 5:35 AM CDT at KJOT

Joliet, IL weather

Foggy and 45°7°, 13°7° warmer than a typical Oct 23.

Today: low 48°9° (likely 43°6° to 48°9°), high 73°23° (likely 70°21° to 73°23°).

Forecasts agree

Now 45°7°

Fog

Wind
Calm
Up to 5 mph8 km/h through 6 PM
Visibility
0.5 mi0.8 km
Fog · under 1 mi1.6 km
Dew point
45°7°
Comfortable
Humidity
100%
Air 45°7°, dew point 45°7° · fog or dew likely
UV index
0Low
Moderate 12–3 PM · peak 4
Air quality
73Moderate
Main pollutant: PM2.5 (fine particles)
Pressure
30.3 inHg1026 hPa
Rising slowly · +0.02 inHg+0.6 hPa in 3 h

Next 2 hours

No precipitation expected in the next 2 hours.

Next 48 hours

About the same as this time yesterday (45°7° then, 45°7° now)

Good hours for
  • Above 60°16° today by 10 AM
  • High 73°23° today at 3 PM
  • Below 60°16° tonight after 9 PM
  1. This morningUp to 65°18° by 11 AM · Clear
  2. This afternoonUp to 73°23° by 3 PM · Clear
  3. TonightDown to 50°10° by 4 AM · Partly cloudy
  4. Tomorrow morningUp to 63°17° by 11 AM · Mostly cloudy
  5. Tomorrow afternoonUp to 73°23° by 3 PM · Mostly cloudy
  6. Tomorrow nightDown to 50°10° by 5 AM · Mostly cloudy
Hourly forecast, next 48 hours, in the place's local time
HourConditionsTemperatureFeels likePrecipitationWindHumidityCloud coverUV index
Fri 6aClear48°9° (likely 44°7° to 48°9°)48°9°0%0 mph0 km/h, gusts 5 mph8 km/h89%6%0
Fri 7aSunny48°9° (likely 43°6° to 48°9°)48°9°0%0 mph0 km/h, gusts 6 mph9 km/h92%4%0
Fri 8aSunny49°9° (likely 44°7° to 49°9°)49°9°0%0 mph0 km/h, gusts 5 mph8 km/h88%1%0
Fri 9aSunny55°13° (likely 50°10° to 55°13°)55°13°0%5 mph8 km/h from SE, gusts 7 mph11 km/h74%1%1
Fri 10aSunny60°16° (likely 57°14° to 60°16°)60°16°0%5 mph8 km/h from SSE, gusts 9 mph14 km/h66%0%1
Fri 11aSunny65°18° (likely 62°17° to 65°18°)65°18°0%5 mph8 km/h from SSE, gusts 7 mph12 km/h57%1%2
Fri 12pSunny68°20° (likely 65°18° to 68°20°)68°20°0%5 mph8 km/h from SSE, gusts 7 mph11 km/h49%3%3
Fri 1pSunny71°22° (likely 68°20° to 71°22°)71°22°0%5 mph8 km/h from SSE, gusts 7 mph12 km/h43%3%4
Fri 2pSunny72°22° (likely 70°21° to 72°22°)73°23°0%5 mph8 km/h from SSE, gusts 7 mph12 km/h40%2%3
Fri 3pSunny73°23° (likely 70°21° to 73°23°)73°23°0%5 mph8 km/h from SE, gusts 7 mph12 km/h38%1%2
Fri 4pSunny73°23° (likely 70°21° to 73°23°)73°23°0%5 mph8 km/h from SE, gusts 7 mph11 km/h37%1%1
Fri 5pSunny71°22° (likely 67°19° to 71°22°)71°22°0%5 mph8 km/h from ESE, gusts 9 mph14 km/h41%7%0
Fri 6pMostly clear67°19° (likely 62°17° to 67°19°)67°19°0%5 mph8 km/h from ESE, gusts 7 mph12 km/h49%24%0
Fri 7pMostly clear62°17° (likely 58°14° to 62°17°)62°17°0%5 mph8 km/h from ESE, gusts 8 mph13 km/h59%56%0
Fri 8pMostly clear60°16° (likely 55°13° to 60°16°)60°16°0%5 mph8 km/h from ESE, gusts 9 mph15 km/h65%19%0
Fri 9pMostly clear58°14° (likely 54°12° to 58°14°)58°14°0%5 mph8 km/h from ESE, gusts 10 mph16 km/h68%20%0
Fri 10pMostly clear56°13° (likely 53°12° to 56°13°)56°13°0%5 mph8 km/h from SE, gusts 10 mph17 km/h70%20%0
Fri 11pMostly clear55°13° (likely 52°11° to 55°13°)55°13°0%5 mph8 km/h from SE, gusts 12 mph20 km/h73%12%0
Sat 12aMostly clear54°12° (likely 51°11° to 54°12°)54°12°0%5 mph8 km/h from SE, gusts 12 mph19 km/h76%17%0
Sat 1aClear53°12° (likely 50°10° to 53°12°)53°12°0%5 mph8 km/h from SE, gusts 11 mph18 km/h77%32%0
Sat 2aMostly clear52°11° (likely 49°9° to 52°11°)52°11°0%5 mph8 km/h from SE, gusts 10 mph16 km/h80%59%0
Sat 3aPartly cloudy51°11° (likely 48°9° to 51°11°)51°11°0%5 mph8 km/h from SE, gusts 9 mph14 km/h82%59%0
Sat 4aPartly cloudy50°10° (likely 47°8° to 51°11°)49°9°0%5 mph8 km/h from SE, gusts 9 mph14 km/h85%63%0
Sat 5aPartly cloudy50°10° (likely 46°8° to 50°10°)48°9°0%5 mph8 km/h from SE, gusts 8 mph13 km/h87%65%0
Sat 6aPartly cloudy49°9° (likely 45°7° to 50°10°)47°8°0%5 mph8 km/h from SE, gusts 8 mph13 km/h89%86%0
Sat 7aCloudy48°9° (likely 45°7° to 50°10°)47°8°0%5 mph8 km/h from SE, gusts 8 mph14 km/h90%93%0
Sat 8aCloudy49°9° (likely 46°8° to 51°11°)48°9°0%5 mph8 km/h from SE, gusts 8 mph13 km/h90%82%0
Sat 9aCloudy54°12° (likely 51°11° to 54°12°)55°13°0%5 mph8 km/h from SSE, gusts 11 mph17 km/h81%76%1
Sat 10aCloudy59°15° (likely 56°13° to 59°15°)59°15°0%5 mph8 km/h from SSE, gusts 11 mph18 km/h71%75%2
Sat 11aCloudy63°17° (likely 60°16° to 63°17°)63°17°0%5 mph8 km/h from SSE, gusts 12 mph20 km/h63%80%3
Sat 12pCloudy67°19° (likely 63°17° to 67°19°)67°19°0%5 mph8 km/h from SSE, gusts 11 mph18 km/h56%81%3
Sat 1pCloudy70°21° (likely 66°19° to 70°21°)70°21°0%10 mph16 km/h from S, gusts 11 mph18 km/h49%78%3
Sat 2pCloudy72°22° (likely 68°20° to 72°22°)72°22°0%10 mph16 km/h from S, gusts 12 mph19 km/h45%80%3
Sat 3pCloudy73°23° (likely 69°21° to 73°23°)73°23°0%10 mph16 km/h from S, gusts 12 mph19 km/h42%79%3
Sat 4pCloudy72°22° (likely 68°20° to 72°22°)72°22°0%5 mph8 km/h from SSE, gusts 12 mph19 km/h41%77%2
Sat 5pCloudy71°22° (likely 67°19° to 71°22°)71°22°0%5 mph8 km/h from SSE, gusts 12 mph19 km/h44%70%1
Sat 6pCloudy67°19° (likely 63°17° to 67°19°)67°19°0%5 mph8 km/h from SSE, gusts 8 mph13 km/h51%79%0
Sat 7pCloudy63°17° (likely 59°15° to 63°17°)63°17°0%5 mph8 km/h from SSE, gusts 10 mph16 km/h58%55%0
Sat 8pMostly clear61°16° (likely 57°14° to 61°16°)61°16°0%5 mph8 km/h from SSE, gusts 11 mph17 km/h63%34%0
Sat 9pPartly cloudy60°16° (likely 55°13° to 60°16°)60°16°0%5 mph8 km/h from SSE, gusts 11 mph17 km/h66%67%0
Sat 10pPartly cloudy58°14° (likely 54°12° to 58°14°)58°14°0%5 mph8 km/h from SSE, gusts 11 mph18 km/h68%54%0
Sat 11pPartly cloudy57°14° (likely 53°12° to 57°14°)57°14°0%5 mph8 km/h from SSE, gusts 11 mph18 km/h71%49%0
Sun 12aPartly cloudy56°13° (likely 52°11° to 56°13°)56°13°0%5 mph8 km/h from SSE, gusts 10 mph17 km/h72%48%0
Sun 1aPartly cloudy55°13° (likely 51°11° to 56°13°)55°13°0%5 mph8 km/h from SSE, gusts 9 mph14 km/h74%69%0
Sun 2aCloudy54°12° (likely 50°10° to 57°14°)54°12°0%5 mph8 km/h from SSE, gusts 6 mph10 km/h76%70%0
Sun 3aPartly cloudy53°12° (likely 49°9° to 56°13°)53°12°0%5 mph8 km/h from S, gusts 6 mph10 km/h77%61%0
Sun 4aPartly cloudy52°11° (likely 48°9° to 56°13°)52°11°0%5 mph8 km/h from S, gusts 6 mph10 km/h80%67%0
Sun 5aCloudy50°10° (likely 46°8° to 55°13°)50°10°0%5 mph8 km/h from S, gusts 5 mph8 km/h83%74%0

Days ahead

Shaded: typical range for these dates (1991–2020)
  1. Today, Oct 23. Fog. High 73°23°, low 48°9°. Typical 60°16° / 41°5°. Dry. Forecasts agree.
    1. Morning

      6 AM–noon

      Sunny, 49°9°

      Dry

    2. Afternoon

      noon–6 PM

      Sunny, 73°23°

      Dry

    3. Evening

      6 PM–midnight

      Mostly clear, 60°16°

      Dry

    4. Overnight

      midnight–6 AM

      Partly cloudy, 50°10°

      Dry

    Official NWS forecast

    Today: Patchy fog before 8am. Sunny. High near 73, with temperatures falling to around 71 in the afternoon. Southeast wind 0 to 5 mph.

    Tonight: Mostly clear. Low around 48, with temperatures rising to around 50 overnight. Southeast wind around 5 mph.

    Forecasts agreeIndependent forecasts are close; the range is narrow.

    High, likely
    70°21°–73°23°
    Low, likely
    43°6°–48°9°
    Typical high / low
    60°16° / 41°5°
    Wind
    7 mph12 km/h, gusts 18 mph28 km/h
    UV peak
    4
  2. Tomorrow, Oct 24. Cloudy. High 73°23°, low 50°10°. Typical 60°16° / 40°4°. Dry. Forecasts agree.
    1. Morning

      6 AM–noon

      Cloudy, 49°9°

      Dry

    2. Afternoon

      noon–6 PM

      Cloudy, 73°23°

      Dry

    3. Evening

      6 PM–midnight

      Partly cloudy, 61°16°

      Dry

    4. Overnight

      midnight–6 AM

      Partly cloudy, 50°10°

      Dry

    Official NWS forecast

    Day: Partly sunny. High near 73, with temperatures falling to around 71 in the afternoon. South southeast wind 5 to 10 mph.

    Night: Partly cloudy, with a low around 50. South southeast wind around 5 mph.

    Forecasts agreeIndependent forecasts are close; the range is narrow.

    High, likely
    69°21°–73°23°
    Low, likely
    45°7°–50°10°
    Typical high / low
    60°16° / 40°4°
    Wind
    8 mph13 km/h, gusts 17 mph27 km/h
    UV peak
    3
  3. Sunday, Oct 25. Cloudy. High 75°24°, low 50°10°. Typical 60°16° / 40°4°. Dry. Mostly agree.
    1. Morning

      6 AM–noon

      Partly sunny, 50°10°

      Dry

    2. Afternoon

      noon–6 PM

      Cloudy, 73°23°

      Dry

    3. Evening

      6 PM–midnight

      Partly cloudy, 61°16°

      Dry

    4. Overnight

      midnight–6 AM

      Cloudy, 52°11°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Mostly sunny, with a high near 75. South wind around 5 mph.

    Night: Partly cloudy, with a low around 50.

    Mostly agreeIndependent forecasts are fairly close; small surprises are possible.

    High, likely
    72°22°–75°24°
    Low, likely
    45°7°–53°12°
    Typical high / low
    60°16° / 40°4°
    Wind
    8 mph12 km/h, gusts 14 mph23 km/h
    UV peak
    3
  4. Monday, Oct 26. Cloudy. High 71°22°, low 50°10°. Typical 59°15° / 40°4°. Dry. Mostly agree.
    1. Morning

      6 AM–noon

      Cloudy, 52°11°

      Dry

    2. Afternoon

      noon–6 PM

      Cloudy, 69°21°

      Dry

    3. Evening

      6 PM–midnight

      Cloudy, 57°14°

      Dry

    4. Overnight

      midnight–6 AM

      Cloudy, 51°11°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Partly sunny, with a high near 71.

    Night: Mostly cloudy, with a low around 50.

    Mostly agreeIndependent forecasts are fairly close; small surprises are possible.

    High, likely
    67°19°–73°23°
    Low, likely
    49°9°–54°12°
    Typical high / low
    59°15° / 40°4°
    Wind
    11 mph18 km/h, gusts 19 mph30 km/h
    UV peak
    3
  5. Tuesday, Oct 27. Cloudy. High 68°20°, low 49°9°. Typical 58°14° / 39°4°. Dry. Mostly agree.
    1. Morning

      6 AM–noon

      Cloudy, 53°12°

      Dry

    2. Afternoon

      noon–6 PM

      Cloudy, 68°20°

      Dry

    3. Evening

      6 PM–midnight

      Cloudy, 61°16°

      Dry

    4. Overnight

      midnight–6 AM

      Cloudy, 55°13°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Mostly cloudy, with a high near 68.

    Night: Mostly cloudy, with a low around 49.

    Mostly agreeIndependent forecasts are fairly close; small surprises are possible.

    High, likely
    66°19°–70°21°
    Low, likely
    48°9°–53°12°
    Typical high / low
    58°14° / 39°4°
    Wind
    8 mph12 km/h, gusts 25 mph40 km/h
    UV peak
    3
  6. Wednesday, Oct 28. Cloudy. High 71°22°, low 50°10°. Typical 58°14° / 39°4°. Dry. Mostly agree.
    1. Morning

      6 AM–noon

      Cloudy, 56°14°

      Dry

    2. Afternoon

      noon–6 PM

      Mostly sunny, 71°22°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 62°17°

      Dry

    4. Overnight

      midnight–6 AM

      Partly cloudy, 57°14°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Partly sunny, with a high near 71.

    Night: Partly cloudy, with a low around 50.

    Mostly agreeIndependent forecasts are fairly close; small surprises are possible.

    High, likely
    69°21°–74°23°
    Low, likely
    50°10°–58°14°
    Typical high / low
    58°14° / 39°4°
    Wind
    13 mph21 km/h, gusts 26 mph41 km/h
    UV peak
    3
  7. Thursday, Oct 29. Showers. High 70°21°, low 46°8°. Typical 58°14° / 38°3°. Rain 0.01 in0.3 mm, 20% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Cloudy, 58°14°

      Dry

    2. Afternoon

      noon–6 PM

      Sunny, 67°19°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 55°13°

      Dry

    4. Overnight

      midnight–6 AM

      Clear, 45°7°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: A slight chance of rain showers after 7am. Mostly sunny, with a high near 70.

    Night: A chance of rain showers. Mostly cloudy, with a low around 46.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    63°17°–73°23°
    Low, likely
    45°7°–57°14°
    Typical high / low
    58°14° / 38°3°
    Wind
    15 mph24 km/h, gusts 32 mph52 km/h
    UV peak
    4
  8. Friday, Oct 30. Rain. High 63°17°, low 46°8°. Typical 57°14° / 38°3°. Rain 0.21 in5.3 mm, 20% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Sunny, 48°9°

      Dry

    2. Afternoon

      noon–6 PM

      Rain, 58°15°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 51°10°

      Dry

    4. Overnight

      midnight–6 AM

      Clear, 44°7°

      20% chance · 0.09 in2.3 mm

    Hours this far out come from computer models only.

    The National Weather Service writes about seven days ahead; this day is our model forecast only.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    55°13°–69°21°
    Low, likely
    38°3°–56°13°
    Typical high / low
    57°14° / 38°3°
    Wind
    14 mph22 km/h, gusts 33 mph54 km/h
  9. Saturday, Oct 31. Cloudy. High 61°16°, low 46°8°. Typical 56°13° / 38°3°. Rain 0.22 in5.6 mm, 30% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Drizzle, 46°8°

      30% chance · 0.03 in0.7 mm

    2. Afternoon

      noon–6 PM

      Drizzle, 60°15°

      30% chance · 0.03 in0.8 mm

    3. Evening

      6 PM–midnight

      Drizzle, 56°13°

      30% chance · 0.03 in0.7 mm

    4. Overnight

      midnight–6 AM

      Cloudy, 53°12°

      30% chance

    Hours this far out come from computer models only.

    The National Weather Service writes about seven days ahead; this day is our model forecast only.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    55°13°–66°19°
    Low, likely
    36°2°–58°14°
    Typical high / low
    56°13° / 38°3°
    Wind
    13 mph21 km/h, gusts 32 mph52 km/h
  10. Sunday, Nov 1. Drizzle. High 62°17°, low 51°11°. Typical 56°13° / 37°3°. Rain 0.15 in3.8 mm, 30% chance. Mostly agree.
    1. Morning

      6 AM–noon

      Drizzle, 54°12°

      30% chance

    2. Afternoon

      noon–6 PM

      Drizzle, 59°15°

      30% chance

    3. Evening

      6 PM–midnight

      Drizzle, 52°11°

      20% chance

    Hours this far out come from computer models only.

    The National Weather Service writes about seven days ahead; this day is our model forecast only.

    Mostly agreeIndependent forecasts are fairly close; small surprises are possible.

    High, likely
    58°14°–65°18°
    Low, likely
    47°8°–55°13°
    Typical high / low
    56°13° / 37°3°
    Wind
    13 mph20 km/h, gusts 26 mph41 km/h

The outlook

  1. Today

    Dry, high 73°, low 48°.

  2. Tomorrow

    Dry, high 73°, low 50°.

  3. Sunday

    Dry, high 75°, low 50°.

  4. Rest of week

    Mostly dry, highs 61–71°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (LOT) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue
Radar loads when scrolled into view

Full-screen radar

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 88% less heating than a typical week.

This week 14Typical 110

Heating degree days, base 65°F

Comfort

Dry air outside (dew point 45°F).

Open the windows?

Today, 10:00 AM–8:00 PM

Good stretch to open the windows.

Is this typical?

ROMEOVILLE WFO · official normals 1991–2020 · records 1992–2026

Oct 23, today vs a typical year

Today’s expected high is 13°7° warmer than typical.

Normal high / low
60°16° / 41°5°
Forecast high / low
73°23° / 48°9°
Record high
78°26° in 2022
Record low
28°−2° in 2013

Last 7 days vs normal

On average 2°1° warmer than normal (daily mean temperature).

  1. −6°−4°SatOct 17
  2. −2°−1°SunOct 18
  3. +1°MonOct 19
  4. +5°+3°TueOct 20
  5. +6°+3°WedOct 21
  6. +9°+5°ThuOct 22
  7. —FriOct 23

Joliet weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Sunrise 7:13 AM, sunset 5:59 PM.

Daylight
10 h 45 min
Losing 2 min 39 s a day; shortest Dec 21, 1 h 35 min less
Golden hour
5:20–6:16 PM
Morning 6:56–7:52 AM
Blue hour
6:16–6:27 PM
Morning 6:45–6:56 AM; first light 6:45 AM

Stars tonight? Unknown

Cloud forecast not available for tonight.

Moon

Waxing gibbous

91% lit · growing

Today
sets 4:18 AM · rises 4:32 PM
Full moon
Oct 25
New moon
Nov 9
Looking southwest from Joliet. The highest point on the skyline is about 2,300 ft, 10 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.