Copper Slough at Champaign
6.4 mi- Level
- 9.9 ft
- Flow
- 2 cfs
Reading from Sat 10:15 AM · NWS gauge page
Observed 11:05 AM CDT at KCMI
Seymour, IL weather
Sunny and 64°18°, 11°6° warmer than a typical Oct 24, jacket by 9 PM.
Today: low 46°8° (likely 45°7° to 46°8°), high 73°23° (likely 70°21° to 73°23°).
Now 64°18°
Sunny
- Wind
- 6 mph9 km/h
- From the south-southeast. 58–7 mph11 km/h through 11 PM
- Dew point
- 46°8°
- Comfortable
- UV index
- 4Moderate
- Moderate until 4 PM
- Air quality
- 54Moderate
- Main pollutant: PM2.5 (fine particles)
- Pressure
- 30.42 inHg1030 hPa
- Falling slowly · −0.03 inHg−0.9 hPa in 3 h
Next 2 hours
No precipitation expected in the next 2 hours.
From forecast models
Next 48 hours
3°2° cooler than this time yesterday (67°19° then, 64°18° now)
Good hours for
This afternoonUp to 73°23° by 3 PM · Mostly cloudy
TonightDown to 47°8° by 4 AM · Partly cloudy
Tomorrow morningUp to 66°19° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 75°24° by 3 PM · Mostly cloudy
Tomorrow nightDown to 50°10° by 5 AM · Mostly cloudy
Monday morningUp to 64°18° by 10 AM · Mostly cloudy
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 11a | Partly sunny | 64°18° (likely 62°17° to 64°18°) | 64°18° | 0% | 7 mph11 km/h from SSE, gusts 10 mph17 km/h | 57% | 51% | 3 |
| Sat 12p | Partly sunny | 67°19° (likely 66°19° to 68°20°) | 67°19° | 0% | 7 mph11 km/h from SSE, gusts 9 mph15 km/h | 50% | 45% | 4 |
| Sat 1p | Cloudy | 70°21° (likely 69°21° to 70°21°) | 70°21° | 0% | 7 mph11 km/h from SSE, gusts 9 mph14 km/h | 44% | 80% | 4 |
| Sat 2p | Cloudy | 72°22° (likely 70°21° to 72°22°) | 72°22° | 0% | 7 mph11 km/h from SSE, gusts 8 mph14 km/h | 40% | 80% | 4 |
| Sat 3p | Cloudy | 73°23° (likely 70°21° to 73°23°) | 73°23° | 0% | 7 mph11 km/h from SE, gusts 8 mph14 km/h | 38% | 77% | 3 |
| Sat 4p | Partly sunny | 73°23° (likely 69°21° to 73°23°) | 73°23° | 0% | 7 mph11 km/h from SE, gusts 9 mph15 km/h | 38% | 63% | 2 |
| Sat 5p | Partly sunny | 71°22° (likely 67°19° to 71°22°) | 71°22° | 0% | 6 mph10 km/h from SE, gusts 9 mph15 km/h | 41% | 70% | 1 |
| Sat 6p | Partly cloudy | 67°19° (likely 61°16° to 67°19°) | 67°19° | 0% | 6 mph10 km/h from SE, gusts 8 mph12 km/h | 47% | 70% | 0 |
| Sat 7p | Mostly clear | 62°17° (likely 59°15° to 62°17°) | 62°17° | 0% | 5 mph8 km/h from SE, gusts 9 mph14 km/h | 58% | 36% | 0 |
| Sat 8p | Partly cloudy | 57°14° (likely 57°14° to 58°14°) | 57°14° | 0% | 6 mph10 km/h from SE, gusts 9 mph15 km/h | 71% | 51% | 0 |
| Sat 9p | Mostly clear | 55°13° (likely 55°13° to 56°13°) | 55°13° | 0% | 5 mph8 km/h from SE, gusts 10 mph16 km/h | 76% | 43% | 0 |
| Sat 10p | Clear | 53°12° (likely 53°12° to 55°13°) | 53°12° | 0% | 5 mph8 km/h from SE, gusts 10 mph16 km/h | 82% | 37% | 0 |
| Sat 11p | Clear | 52°11° (likely 52°11° to 54°12°) | 52°11° | 0% | 5 mph8 km/h from SE, gusts 10 mph17 km/h | 82% | 0% | 0 |
| Sun 12a | Clear | 52°11° (likely 51°11° to 53°12°) | 52°11° | 0% | 5 mph8 km/h from SE, gusts 10 mph16 km/h | 84% | 4% | 0 |
| Sun 1a | Mostly clear | 51°11° (likely 50°10° to 52°11°) | 50°10° | 0% | 3 mph5 km/h from SE, gusts 9 mph15 km/h | 84% | 18% | 0 |
| Sun 2a | Clear | 50°10° (likely 49°9° to 50°10°) | 49°9° | 0% | 3 mph5 km/h from SE, gusts 9 mph15 km/h | 87% | 19% | 0 |
| Sun 3a | Mostly clear | 49°9° (likely 48°9° to 49°9°) | 48°9° | 0% | 3 mph5 km/h from SE, gusts 9 mph14 km/h | 90% | 58% | 0 |
| Sun 4a | Mostly clear | 47°8° (likely 47°8° to 49°9°) | 46°8° | 0% | 3 mph5 km/h from SE, gusts 8 mph14 km/h | 91% | 39% | 0 |
| Sun 5a | Mostly clear | 47°8° (likely 46°8° to 48°9°) | 45°7° | 0% | 3 mph5 km/h from SE, gusts 8 mph13 km/h | 94% | 34% | 0 |
| Sun 6a | Mostly clear | 47°8° (likely 46°8° to 48°9°) | 46°8° | 0% | 3 mph5 km/h from SE, gusts 8 mph12 km/h | 94% | 69% | 0 |
| Sun 7a | Mostly sunny | 46°8° (likely 45°7° to 47°8°) | 45°7° | 5% | 3 mph5 km/h from SE, gusts 8 mph12 km/h | 95% | 79% | 0 |
| Sun 8a | Mostly sunny | 48°9° (likely 46°8° to 49°9°) | 46°8° | 5% | 3 mph5 km/h from SE, gusts 8 mph13 km/h | 98% | 69% | 0 |
| Sun 9a | Mostly sunny | 53°12° (likely 52°11° to 54°12°) | 53°12° | 0% | 3 mph5 km/h from SSE, gusts 8 mph12 km/h | 89% | 67% | 1 |
| Sun 10a | Mostly sunny | 62°17° (likely 59°15° to 62°17°) | 62°17° | 0% | 3 mph5 km/h from SSE, gusts 8 mph13 km/h | 70% | 66% | 2 |
| Sun 11a | Cloudy | 66°19° (likely 64°18° to 68°20°) | 66°19° | 0% | 3 mph5 km/h from S, gusts 7 mph12 km/h | 61% | 75% | 3 |
| Sun 12p | Cloudy | 70°21° (likely 67°19° to 71°22°) | 70°21° | 0% | 3 mph5 km/h from S, gusts 7 mph12 km/h | 53% | 71% | 3 |
| Sun 1p | Mostly sunny | 73°23° (likely 70°21° to 73°23°) | 73°23° | 0% | 5 mph8 km/h from SSE, gusts 7 mph11 km/h | 45% | 65% | 4 |
| Sun 2p | Cloudy | 74°23° (likely 71°22° to 75°24°) | 74°23° | 0% | 5 mph8 km/h from SSE, gusts 7 mph11 km/h | 43% | 66% | 4 |
| Sun 3p | Cloudy | 75°24° (likely 72°22° to 75°24°) | 75°24° | 0% | 3 mph5 km/h from SSE, gusts 6 mph10 km/h | 42% | 74% | 3 |
| Sun 4p | Mostly cloudy | 75°24° (likely 71°22° to 75°24°) | 75°24° | 0% | 3 mph5 km/h from SSE, gusts 6 mph9 km/h | 40% | 71% | 2 |
| Sun 5p | Cloudy | 73°23° (likely 69°21° to 74°23°) | 73°23° | 0% | 2 mph3 km/h from SSE, gusts 5 mph7 km/h | 44% | 72% | 1 |
| Sun 6p | Cloudy | 71°22° (likely 64°18° to 71°22°) | 71°22° | 0% | 2 mph3 km/h from SE, gusts 4 mph7 km/h | 47% | 52% | 0 |
| Sun 7p | Partly cloudy | 66°19° (likely 61°16° to 66°19°) | 66°19° | 0% | 3 mph5 km/h from SE, gusts 5 mph9 km/h | 56% | 49% | 0 |
| Sun 8p | Cloudy | 60°16° (likely 59°15° to 62°17°) | 60°16° | 0% | 3 mph5 km/h from SE, gusts 6 mph9 km/h | 67% | 60% | 0 |
| Sun 9p | Cloudy | 58°14° (likely 57°14° to 60°16°) | 58°14° | 0% | 3 mph5 km/h from SSE, gusts 7 mph11 km/h | 69% | 60% | 0 |
| Sun 10p | Cloudy | 56°13° (likely 56°13° to 58°14°) | 56°13° | 0% | 3 mph5 km/h from SSE, gusts 8 mph12 km/h | 74% | 60% | 0 |
| Sun 11p | Cloudy | 55°13° (likely 55°13° to 56°13°) | 55°13° | 0% | 2 mph3 km/h from SSE, gusts 8 mph13 km/h | 77% | 60% | 0 |
| Mon 12a | Partly cloudy | 54°12° (likely 53°12° to 54°12°) | 54°12° | 0% | 2 mph3 km/h from SSE, gusts 8 mph14 km/h | 77% | 71% | 0 |
| Mon 1a | Cloudy | 54°12° (likely 52°11° to 54°12°) | 54°12° | 0% | 2 mph3 km/h from SSE, gusts 8 mph13 km/h | 77% | 76% | 0 |
| Mon 2a | Cloudy | 53°12° (likely 51°11° to 53°12°) | 53°12° | 0% | 2 mph3 km/h from SSE, gusts 8 mph13 km/h | 77% | 62% | 0 |
| Mon 3a | Cloudy | 52°11° (likely 51°11° to 52°11°) | 52°11° | 0% | 2 mph3 km/h from SSE, gusts 7 mph11 km/h | 80% | 74% | 0 |
| Mon 4a | Partly cloudy | 51°11° (likely 50°10° to 51°11°) | 51°11° | 0% | 1 mph2 km/h from S, gusts 7 mph11 km/h | 84% | 71% | 0 |
| Mon 5a | Cloudy | 50°10° (likely 50°10° to 51°11°) | 50°10° | 0% | 1 mph2 km/h from SSE, gusts 6 mph9 km/h | 85% | 81% | 0 |
| Mon 6a | Cloudy | 50°10° (likely 49°9° to 52°11°) | 50°10° | 0% | 1 mph2 km/h from SSE, gusts 5 mph7 km/h | 85% | 87% | 0 |
| Mon 7a | Cloudy | 50°10° (likely 49°9° to 53°12°) | 50°10° | 0% | 1 mph2 km/h from SSE, gusts 4 mph6 km/h | 82% | 82% | 0 |
| Mon 8a | Sunny | 51°11° (likely 50°10° to 57°14°) | 51°11° | 0% | 1 mph2 km/h from SE, gusts 3 mph5 km/h | 90% | 66% | 0 |
| Mon 9a | Partly sunny | 56°13° (likely 55°13° to 61°16°) | 56°13° | 0% | 1 mph2 km/h from SSE, gusts 4 mph7 km/h | 82% | 87% | 1 |
| Mon 10a | Partly sunny | 64°18° (likely 61°16° to 64°18°) | 64°18° | 0% | 1 mph2 km/h from S, gusts 5 mph8 km/h | 67% | 89% | 2 |
Days ahead
Shaded: typical range for these dates (1991–2020)
Today, Oct 24. Cloudy. High 73°23°, low 46°8°. Typical 62°17° / 41°5°. Dry. Forecasts agree.
Afternoon
noon–6 PM
Cloudy, 73°23°Dry
Evening
6 PM–midnight
Mostly clear, 57°14°Dry
Overnight
midnight–6 AM
Mostly clear, 47°8°Dry
Official NWS forecast
Today: Mostly sunny, with a high near 73. Southeast wind around 7 mph.
Tonight: Mostly clear, with a low around 46. Southeast wind around 6 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 70°21°–73°23°
- Low, likely
- 45°7°–46°8°
- Typical high / low
- 62°17° / 41°5°
- Wind
- 8 mph13 km/h, gusts 15 mph23 km/h
- UV peak
- 4
Tomorrow, Oct 25. Cloudy. High 75°24°, low 50°10°. Typical 61°16° / 40°4°. Dry. Mostly agree.
Morning
6 AM–noon
Mostly sunny, 48°9°Dry
Afternoon
noon–6 PM
Cloudy, 75°24°Dry
Evening
6 PM–midnight
Cloudy, 60°16°Dry
Overnight
midnight–6 AM
Cloudy, 50°10°Dry
Official NWS forecast
Day: Mostly sunny, with a high near 75. South southeast wind around 5 mph.
Night: Partly cloudy, with a low around 50. South southeast wind around 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 72°22°–75°24°
- Low, likely
- 45°7°–50°10°
- Typical high / low
- 61°16° / 40°4°
- Wind
- 7 mph11 km/h, gusts 14 mph23 km/h
- UV peak
- 4
Monday, Oct 26. Cloudy. High 77°25°, low 49°9°. Typical 61°16° / 40°4°. Dry. Mostly agree.
Morning
6 AM–noon
Partly sunny, 51°11°Dry
Afternoon
noon–6 PM
Cloudy, 74°23°Dry
Evening
6 PM–midnight
Cloudy, 62°17°Dry
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 77. South southeast wind around 2 mph.
Night: Partly cloudy, with a low around 49. East wind around 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 72°22°–77°25°
- Low, likely
- 49°9°–50°10°
- Typical high / low
- 61°16° / 40°4°
- Wind
- 6 mph10 km/h, gusts 12 mph19 km/h
- UV peak
- 3
Tuesday, Oct 27. Cloudy. High 73°23°, low 51°11°. Typical 60°16° / 40°4°. Dry. Mostly agree.
Morning
6 AM–noon
Cloudy, 53°11°Dry
Afternoon
noon–6 PM
Cloudy, 72°22°Dry
Evening
6 PM–midnight
Cloudy, 62°17°Dry
Overnight
midnight–6 AM
Cloudy, 54°12°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 73. Southeast wind 3 to 7 mph.
Night: Mostly cloudy, with a low around 51.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 70°21°–73°23°
- Low, likely
- 48°9°–54°12°
- Typical high / low
- 60°16° / 40°4°
- Wind
- 11 mph18 km/h, gusts 23 mph36 km/h
- UV peak
- 4
Wednesday, Oct 28. Partly sunny. High 77°25°, low 52°11°. Typical 60°16° / 39°4°. Dry. Mostly agree.
Morning
6 AM–noon
Partly sunny, 55°13°Dry
Afternoon
noon–6 PM
Sunny, 75°24°Dry
Evening
6 PM–midnight
Clear, 62°17°Dry
Overnight
midnight–6 AM
Clear, 54°12°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 77.
Night: Mostly clear, with a low around 52.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 72°22°–77°25°
- Low, likely
- 51°11°–55°13°
- Typical high / low
- 60°16° / 39°4°
- Wind
- 13 mph21 km/h, gusts 21 mph33 km/h
- UV peak
- 4
Thursday, Oct 29. Mostly sunny. High 75°24°, low 48°9°. Typical 59°15° / 39°4°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 56°13°Dry
Afternoon
noon–6 PM
Sunny, 77°25°Dry
Evening
6 PM–midnight
Partly cloudy, 66°19°Dry
Overnight
midnight–6 AM
Partly cloudy, 56°13°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 75.
Night: Partly cloudy, with a low around 48.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 75°24°–78°26°
- Low, likely
- 48°9°–57°14°
- Typical high / low
- 59°15° / 39°4°
- Wind
- 13 mph20 km/h, gusts 24 mph38 km/h
- UV peak
- 4
Friday, Oct 30. Partly sunny. High 74°23°, low 49°9°. Typical 59°15° / 38°3°. Dry. Mostly agree.
Morning
6 AM–noon
Partly sunny, 58°15°Dry
Afternoon
noon–6 PM
Mostly sunny, 76°25°Dry
Evening
6 PM–midnight
Mostly clear, 65°18°Dry
Overnight
midnight–6 AM
Cloudy, 56°13°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 74.
Night: A slight chance of rain showers after 1am. Mostly cloudy, with a low around 49.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 74°23°–79°26°
- Low, likely
- 49°9°–58°14°
- Typical high / low
- 59°15° / 38°3°
- Wind
- 11 mph18 km/h, gusts 22 mph36 km/h
- UV peak
- 4
Saturday, Oct 31. Cloudy. High 73°23°, low 58°14°. Typical 58°14° / 38°3°. Rain 0.1 in2.5 mm, 40% chance. Forecasts differ.
Morning
6 AM–noon
Cloudy, 58°15°20% chance
Afternoon
noon–6 PM
Cloudy, 75°24°30% chance
Evening
6 PM–midnight
Drizzle, 67°19°40% chance · 0.01 in0.3 mm
Overnight
midnight–6 AM
Cloudy, 63°17°50% chance · 0.08 in2 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
- 69°21°–78°26°
- Low, likely
- 54°12°–60°16°
- Typical high / low
- 58°14° / 38°3°
- Wind
- 13 mph22 km/h, gusts 23 mph37 km/h
- UV peak
- 3
Sunday, Nov 1. Drizzle. High 67°19°, low 60°16°. Typical 58°14° / 38°3°. Rain 0.53 in13 mm, 50% chance. Forecasts agree.
Morning
6 AM–noon
Drizzle, 64°18°50% chance · 0.12 in2.9 mm
Afternoon
noon–6 PM
Drizzle, 66°19°50% chance · 0.19 in4.7 mm
Evening
6 PM–midnight
Drizzle, 63°17°50% chance · 0.14 in3.6 mm
Overnight
midnight–6 AM
Drizzle, 60°15°40% chance · 0.11 in2.8 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 agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 67°19°–68°20°
- Low, likely
- 58°14°–64°18°
- Typical high / low
- 58°14° / 38°3°
- Wind
- 26 mph41 km/h, gusts 42 mph67 km/h
- UV peak
- 1
Monday, Nov 2. Rain. High 64°18°, low 56°13°. Typical 57°14° / 37°3°. Rain 0.55 in14 mm, 50% chance. Forecasts differ.
Morning
6 AM–noon
Drizzle, 60°15°40% chance · 0.09 in2.4 mm
Afternoon
noon–6 PM
Rain, 63°17°40% chance · 0.35 in8.8 mm
Evening
6 PM–midnight
Rain, 62°16°40% chance · 0.26 in6.7 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
- 61°16°–69°21°
- Low, likely
- 52°11°–65°18°
- Typical high / low
- 57°14° / 37°3°
- Wind
- 21 mph33 km/h, gusts 40 mph64 km/h
- UV peak
- 3
The outlook
Today
Dry, high 73°, low 46°.
Tomorrow
Dry, high 75°, low 50°.
Monday
Dry, high 77°, low 49°.
Rest of week
Highs 64–77°; chance of precipitation on Sunday, Monday.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (ILX) (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
Rivers
NOAA river gauges within 25 mi
Sangamon River at Monticello
10 mi- Level
- 4.9 ft
- Flow
- 53 cfs
Reading from Sat 10 AM · NWS gauge page
Boneyard Creek below Champaign - 6th St
10 mi- Level
- 11.4 ft
Reading from Sat 10 AM · NWS gauge page
Boneyard Creek at Urbana - University of Illinois
11 mi- Level
- 10.2 ft
Reading from Sat 8:45 AM · NWS gauge page
For your home
What this week’s weather means for heating, cooling, pipes and fresh air.
Heating this week
About 85% less heating than a typical week.
This week 15Typical 106
Heating degree days, base 65°F
Heat-pump hours, next 7 days
- h below 47°F
- 4
- h below 17°F
- 0
- h below 5°F
- 0
47, 17 and 5°F are the test points heat pumps are rated at.
Comfort
Dry air outside (dew point 46°F).
Open the windows?
Today, 12:00 PM–7:00 PM
Good stretch to open the windows.
Is this typical?
CHAMPAIGN 3S · official normals 1991–2020 · records 1888–2026
Oct 24, today vs a typical year
Today’s expected high is 11°6° warmer than typical.
- Normal high / low
- 62°17° / 41°5°
- Forecast high / low
- 73°23° / 46°8°
- Record high
- 80°27° in 1899
- Record low
- 19°−7° in 1981
Last 7 days vs normal
On average 2°1° warmer than normal (daily mean temperature).
- −8°−4°SunOct 18
- −2°−1°MonOct 19
- +3°+2°TueOct 20
- +5°+3°WedOct 21
- +7°+4°ThuOct 22
- +10°+6°FriOct 23
- —SatOct 24
Seymour weather by month: normals, records, snow and freeze dates
Sun & moon
Sun
Sunrise 7:14 AM, sunset 6:01 PM.
- Daylight
- 10 h 47 min
- Losing 2 min 30 s a day; shortest Dec 21, 1 h 28 min less
- Golden hour
- 5:23–6:18 PM
- Morning 6:57–7:51 AM
- Blue hour
- 6:18–6:28 PM
- Morning 6:46–6:57 AM; first light 6:46 AM
Stars tonight? Fair
Mostly clear 11 PM–3 AM, but the moon is 99% lit and up.
Moon
Waxing gibbous
97% lit · growing
- Today
- sets 5:28 AM · rises 4:58 PM
- Full moon
- Oct 25
- New moon
- Nov 9
