Illinois River at Marseilles Lock (tailwater)
15 mi- Level
- 459 ft
- Flow
- 2,200 cfs
Forecast peak 459 ft Sat 1 PM
Reading from Sat 9:30 AM · NWS gauge page
Observed 10:15 AM CDT at KJOT
Streator, IL weather
Sunny and 61°16°, 14°8° warmer than a typical Oct 24.
Today: low 48°9° (likely 45°7° to 49°9°), high 74°23° (likely 70°21° to 74°23°).
Now 61°16°
Sunny
- Wind
- Calm
- Up to 5 mph8 km/h through 10 PM
- Dew point
- 49°9°
- Comfortable
- UV index
- 1Low
- Moderate 12–3 PM · peak 3
- Pressure
- 30.44 inHg1031 hPa
- Steady over the last 3 h
Next 2 hours
No precipitation expected in the next 2 hours.
From forecast models
Next 48 hours
About the same as this time yesterday (60°15° then, 58°14° now)
Good hours for
This morningUp to 64°18° by 11 AM · Mostly cloudy
This afternoonUp to 74°23° by 4 PM · Partly cloudy
TonightDown to 50°10° by 5 AM · Partly cloudy
Tomorrow morningUp to 67°19° by 11 AM · Cloudy
Tomorrow afternoonUp to 76°24° by 3 PM · Mostly cloudy
Tomorrow nightDown to 51°11° by 5 AM · Mostly cloudy
Monday morningUp to 57°14° by 9 AM · Cloudy
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 10a | Sunny | 60°16° (likely 57°14° to 60°16°) | 60°16° | 0% | 5 mph8 km/h from SSE, gusts 10 mph16 km/h | 66% | 41% | 1 |
| Sat 11a | Cloudy | 64°18° (likely 62°17° to 65°18°) | 64°18° | 0% | 5 mph8 km/h from S, gusts 12 mph19 km/h | 56% | 80% | 2 |
| Sat 12p | Mostly cloudy | 68°20° (likely 65°18° to 68°20°) | 68°20° | 0% | 5 mph8 km/h from S, gusts 10 mph16 km/h | 49% | 70% | 3 |
| Sat 1p | Mostly cloudy | 71°22° (likely 68°20° to 71°22°) | 71°22° | 0% | 5 mph8 km/h from S, gusts 10 mph15 km/h | 44% | 67% | 3 |
| Sat 2p | Cloudy | 72°22° (likely 70°21° to 72°22°) | 72°22° | 0% | 5 mph8 km/h from SSE, gusts 9 mph14 km/h | 40% | 77% | 3 |
| Sat 3p | Sunny | 73°23° (likely 70°21° to 73°23°) | 73°23° | 0% | 5 mph8 km/h from S, gusts 9 mph14 km/h | 39% | 33% | 2 |
| Sat 4p | Sunny | 74°23° (likely 70°21° to 74°23°) | 74°23° | 0% | 5 mph8 km/h from SSE, gusts 9 mph15 km/h | 38% | 28% | 1 |
| Sat 5p | Sunny | 72°22° (likely 67°19° to 72°22°) | 72°22° | 0% | 5 mph8 km/h from SSE, gusts 10 mph17 km/h | 40% | 27% | 0 |
| Sat 6p | Mostly cloudy | 68°20° (likely 62°17° to 68°20°) | 68°20° | 0% | 5 mph8 km/h from SE, gusts 9 mph14 km/h | 47% | 33% | 0 |
| Sat 7p | Clear | 63°17° (likely 60°16° to 63°17°) | 63°17° | 0% | 5 mph8 km/h from SE, gusts 9 mph15 km/h | 56% | 7% | 0 |
| Sat 8p | Clear | 60°16° (likely 57°14° to 60°16°) | 60°16° | 0% | 5 mph8 km/h from SE, gusts 10 mph16 km/h | 62% | 10% | 0 |
| Sat 9p | Clear | 58°14° (likely 56°13° to 58°14°) | 58°14° | 0% | 5 mph8 km/h from SSE, gusts 10 mph16 km/h | 66% | 4% | 0 |
| Sat 10p | Clear | 56°13° (likely 54°12° to 57°14°) | 57°14° | 0% | 5 mph8 km/h from SSE, gusts 11 mph17 km/h | 69% | 1% | 0 |
| Sat 11p | Clear | 55°13° (likely 52°11° to 55°13°) | 55°13° | 0% | 5 mph8 km/h from SSE, gusts 11 mph18 km/h | 72% | 3% | 0 |
| Sun 12a | Clear | 54°12° (likely 51°11° to 54°12°) | 54°12° | 0% | 5 mph8 km/h from SSE, gusts 10 mph16 km/h | 72% | 42% | 0 |
| Sun 1a | Partly cloudy | 53°12° (likely 51°11° to 54°12°) | 53°12° | 0% | 5 mph8 km/h from SSE, gusts 9 mph15 km/h | 76% | 45% | 0 |
| Sun 2a | Partly cloudy | 52°11° (likely 50°10° to 53°12°) | 52°11° | 0% | 5 mph8 km/h from SSE, gusts 10 mph15 km/h | 77% | 50% | 0 |
| Sun 3a | Partly cloudy | 51°11° (likely 50°10° to 52°11°) | 51°11° | 0% | 5 mph8 km/h from SSE, gusts 9 mph15 km/h | 78% | 71% | 0 |
| Sun 4a | Cloudy | 51°11° (likely 49°9° to 51°11°) | 50°10° | 0% | 5 mph8 km/h from SSE, gusts 9 mph14 km/h | 79% | 90% | 0 |
| Sun 5a | Cloudy | 50°10° (likely 49°9° to 50°10°) | 49°9° | 0% | 5 mph8 km/h from SSE, gusts 9 mph14 km/h | 81% | 93% | 0 |
| Sun 6a | Cloudy | 49°9° (likely 48°9° to 50°10°) | 48°9° | 0% | 5 mph8 km/h from SSE, gusts 9 mph14 km/h | 82% | 97% | 0 |
| Sun 7a | Cloudy | 48°9° (likely 48°9° to 50°10°) | 49°9° | 0% | 0 mph0 km/h, gusts 9 mph14 km/h | 87% | 95% | 0 |
| Sun 8a | Cloudy | 51°11° (likely 48°9° to 52°11°) | 51°11° | 0% | 0 mph0 km/h, gusts 8 mph12 km/h | 84% | 93% | 0 |
| Sun 9a | Partly sunny | 57°14° (likely 53°12° to 57°14°) | 57°14° | 0% | 5 mph8 km/h from S, gusts 7 mph11 km/h | 70% | 77% | 1 |
| Sun 10a | Cloudy | 62°17° (likely 60°16° to 62°17°) | 62°17° | 0% | 5 mph8 km/h from S, gusts 10 mph16 km/h | 61% | 78% | 2 |
| Sun 11a | Cloudy | 67°19° (likely 65°18° to 68°20°) | 67°19° | 0% | 5 mph8 km/h from S, gusts 10 mph15 km/h | 52% | 79% | 2 |
| Sun 12p | Cloudy | 70°21° (likely 68°20° to 72°22°) | 71°22° | 0% | 5 mph8 km/h from S, gusts 9 mph15 km/h | 45% | 80% | 3 |
| Sun 1p | Mostly cloudy | 73°23° (likely 71°22° to 74°23°) | 73°23° | 0% | 5 mph8 km/h from S, gusts 8 mph12 km/h | 40% | 69% | 3 |
| Sun 2p | Cloudy | 75°24° (likely 72°22° to 76°24°) | 75°24° | 0% | 5 mph8 km/h from S, gusts 8 mph13 km/h | 37% | 77% | 3 |
| Sun 3p | Mostly cloudy | 76°24° (likely 73°23° to 76°24°) | 76°24° | 0% | 5 mph8 km/h from S, gusts 8 mph12 km/h | 36% | 69% | 2 |
| Sun 4p | Cloudy | 76°24° (likely 72°22° to 76°24°) | 76°24° | 0% | 5 mph8 km/h from S, gusts 7 mph12 km/h | 35% | 80% | 2 |
| Sun 5p | Cloudy | 74°23° (likely 69°21° to 74°23°) | 74°23° | 0% | 0 mph0 km/h, gusts 8 mph12 km/h | 39% | 79% | 1 |
| Sun 6p | Cloudy | 70°21° (likely 64°18° to 70°21°) | 70°21° | 0% | 0 mph0 km/h, gusts 6 mph10 km/h | 44% | 73% | 0 |
| Sun 7p | Cloudy | 66°19° (likely 61°16° to 66°19°) | 66°19° | 0% | 0 mph0 km/h, gusts 6 mph10 km/h | 53% | 69% | 0 |
| Sun 8p | Cloudy | 62°17° (likely 59°15° to 63°17°) | 62°17° | 0% | 0 mph0 km/h, gusts 6 mph10 km/h | 60% | 71% | 0 |
| Sun 9p | Cloudy | 60°16° (likely 57°14° to 61°16°) | 60°16° | 0% | 0 mph0 km/h, gusts 7 mph11 km/h | 65% | 77% | 0 |
| Sun 10p | Cloudy | 58°14° (likely 55°13° to 59°15°) | 58°14° | 0% | 0 mph0 km/h, gusts 7 mph12 km/h | 69% | 62% | 0 |
| Sun 11p | Cloudy | 56°13° (likely 54°12° to 58°14°) | 56°13° | 0% | 0 mph0 km/h, gusts 8 mph12 km/h | 72% | 64% | 0 |
| Mon 12a | Cloudy | 56°13° (likely 53°12° to 57°14°) | 56°13° | 0% | 0 mph0 km/h, gusts 7 mph12 km/h | 73% | 59% | 0 |
| Mon 1a | Cloudy | 54°12° (likely 52°11° to 56°13°) | 55°13° | 0% | 0 mph0 km/h, gusts 7 mph11 km/h | 75% | 72% | 0 |
| Mon 2a | Cloudy | 54°12° (likely 51°11° to 55°13°) | 54°12° | 0% | 0 mph0 km/h, gusts 7 mph11 km/h | 77% | 61% | 0 |
| Mon 3a | Cloudy | 53°12° (likely 50°10° to 54°12°) | 53°12° | 0% | 0 mph0 km/h, gusts 6 mph10 km/h | 77% | 77% | 0 |
| Mon 4a | Cloudy | 52°11° (likely 49°9° to 53°12°) | 52°11° | 0% | 0 mph0 km/h, gusts 6 mph10 km/h | 78% | 88% | 0 |
| Mon 5a | Cloudy | 51°11° (likely 49°9° to 53°12°) | 51°11° | 0% | 0 mph0 km/h, gusts 4 mph7 km/h | 81% | 87% | 0 |
| Mon 6a | Cloudy | 50°10° (likely 48°9° to 53°12°) | 50°10° | 0% | 0 mph0 km/h, gusts 3 mph4 km/h | 83% | 86% | 0 |
| Mon 7a | Cloudy | 50°10° (likely 48°9° to 53°12°) | 50°10° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 84% | 85% | 0 |
| Mon 8a | Cloudy | 53°12° (likely 49°9° to 57°14°) | 53°12° | 0% | 0 mph0 km/h, gusts 2 mph4 km/h | 79% | 86% | 0 |
| Mon 9a | Cloudy | 57°14° (likely 53°12° to 60°16°) | 57°14° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 71% | 90% | 1 |
Days ahead
Shaded: typical range for these dates (1991–2020)
Today, Oct 24. Cloudy. High 74°23°, low 48°9°. Typical 60°16° / 40°4°. Dry. Forecasts agree.
Morning
6 AM–noon
Cloudy, 64°18°Dry
Afternoon
noon–6 PM
Sunny, 74°23°Dry
Evening
6 PM–midnight
Clear, 60°16°Dry
Overnight
midnight–6 AM
Partly cloudy, 50°10°Dry
Official NWS forecast
Today: Partly sunny. High near 74, with temperatures falling to around 72 in the afternoon. South southeast wind around 5 mph, with gusts as high as 15 mph.
Tonight: Partly cloudy. Low around 48, with temperatures rising to around 50 overnight. South southeast wind around 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 70°21°–74°23°
- Low, likely
- 45°7°–49°9°
- Typical high / low
- 60°16° / 40°4°
- Wind
- 8 mph13 km/h, gusts 17 mph27 km/h
- UV peak
- 4
Tomorrow, Oct 25. Cloudy. High 76°24°, low 50°10°. Typical 60°16° / 40°4°. Dry. Mostly agree.
Morning
6 AM–noon
Partly sunny, 51°11°Dry
Afternoon
noon–6 PM
Mostly cloudy, 76°24°Dry
Evening
6 PM–midnight
Cloudy, 62°17°Dry
Overnight
midnight–6 AM
Cloudy, 51°11°Dry
Official NWS forecast
Day: Mostly sunny. High near 76, with temperatures falling to around 74 in the afternoon. South wind 0 to 5 mph.
Night: Mostly cloudy, with a low around 50. South southeast wind around 0 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 73°23°–76°24°
- Low, likely
- 48°9°–50°10°
- Typical high / low
- 60°16° / 40°4°
- Wind
- 7 mph12 km/h, gusts 14 mph22 km/h
- UV peak
- 3
Monday, Oct 26. Mostly cloudy. High 73°23°, low 48°9°. Typical 59°15° / 39°4°. Dry. Mostly agree.
Morning
6 AM–noon
Cloudy, 53°12°Dry
Afternoon
noon–6 PM
Cloudy, 72°22°Dry
Evening
6 PM–midnight
Mostly clear, 60°16°Dry
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 73. East northeast wind 0 to 5 mph, with gusts as high as 15 mph.
Night: Mostly cloudy, with a low around 48.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 70°21°–75°24°
- Low, likely
- 48°9°–52°11°
- Typical high / low
- 59°15° / 39°4°
- Wind
- 12 mph20 km/h, gusts 20 mph32 km/h
- UV peak
- 3
Tuesday, Oct 27. Cloudy. High 72°22°, low 52°11°. Typical 59°15° / 39°4°. Dry. Mostly agree.
Morning
6 AM–noon
Cloudy, 53°12°Dry
Afternoon
noon–6 PM
Cloudy, 72°22°Dry
Evening
6 PM–midnight
Cloudy, 62°17°Dry
Overnight
midnight–6 AM
Cloudy, 56°13°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly cloudy, with a high near 72.
Night: Mostly cloudy, with a low around 52.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 69°21°–74°23°
- Low, likely
- 49°9°–53°12°
- Typical high / low
- 59°15° / 39°4°
- Wind
- 12 mph19 km/h, gusts 21 mph34 km/h
- UV peak
- 3
Wednesday, Oct 28. Partly sunny. High 76°24°, low 53°12°. Typical 58°14° / 38°3°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 56°13°Dry
Afternoon
noon–6 PM
Sunny, 74°23°Dry
Evening
6 PM–midnight
Clear, 64°18°Dry
Overnight
midnight–6 AM
Clear, 58°14°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 76.
Night: Partly cloudy, with a low around 53.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 72°22°–76°24°
- Low, likely
- 53°12°–56°13°
- Typical high / low
- 58°14° / 38°3°
- Wind
- 13 mph20 km/h, gusts 26 mph41 km/h
- UV peak
- 4
Thursday, Oct 29. Partly sunny. High 73°23°, low 49°9°. Typical 58°14° / 38°3°. Dry. Forecasts differ.
Morning
6 AM–noon
Partly sunny, 59°15°Dry
Afternoon
noon–6 PM
Partly sunny, 73°23°Dry
Evening
6 PM–midnight
Clear, 64°18°Dry
Overnight
midnight–6 AM
Clear, 55°13°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 73.
Night: Partly cloudy, with a low around 49.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 71°22°–77°25°
- Low, likely
- 49°9°–58°14°
- Typical high / low
- 58°14° / 38°3°
- Wind
- 13 mph20 km/h, gusts 27 mph44 km/h
- UV peak
- 3
Friday, Oct 30. Showers. High 71°22°, low 50°10°. Typical 57°14° / 38°3°. Rain 0.01 in0.3 mm, 20% chance. Forecasts differ.
Morning
6 AM–noon
Cloudy, 56°13°Dry
Afternoon
noon–6 PM
Cloudy, 72°22°Dry
Evening
6 PM–midnight
Cloudy, 62°17°Dry
Overnight
midnight–6 AM
Cloudy, 56°13°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers after 7am. Partly sunny, with a high near 71.
Night: A slight chance of rain showers. Mostly cloudy, with a low around 50.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 68°20°–77°25°
- Low, likely
- 46°8°–58°14°
- Typical high / low
- 57°14° / 38°3°
- Wind
- 13 mph20 km/h, gusts 26 mph42 km/h
- UV peak
- 3
Saturday, Oct 31. Cloudy. High 72°22°, low 57°14°. Typical 56°13° / 37°3°. Rain 0.11 in2.8 mm, 40% chance. Forecasts differ.
Morning
6 AM–noon
Cloudy, 59°15°30% chance
Afternoon
noon–6 PM
Cloudy, 72°22°30% chance
Evening
6 PM–midnight
Drizzle, 65°19°40% chance · 0.02 in0.6 mm
Overnight
midnight–6 AM
Drizzle, 63°17°40% chance · 0.06 in1.5 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°–77°25°
- Low, likely
- 55°13°–60°16°
- Typical high / low
- 56°13° / 37°3°
- Wind
- 13 mph21 km/h, gusts 26 mph42 km/h
- UV peak
- 3
Sunday, Nov 1. Showers. High 66°19°, low 60°16°. Typical 56°13° / 37°3°. Rain 0.52 in13 mm, 50% chance. Forecasts agree.
Morning
6 AM–noon
Drizzle, 63°17°50% chance · 0.14 in3.6 mm
Afternoon
noon–6 PM
Drizzle, 65°19°40% chance · 0.19 in4.7 mm
Evening
6 PM–midnight
Showers, 63°17°50% chance · 0.19 in4.7 mm
Overnight
midnight–6 AM
Showers, 59°15°50% chance · 0.03 in0.8 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
- 66°19°–68°20°
- Low, likely
- 57°14°–62°17°
- Typical high / low
- 56°13° / 37°3°
- Wind
- 25 mph40 km/h, gusts 41 mph66 km/h
- UV peak
- 2
Monday, Nov 2. Showers. High 63°17°, low 54°12°. Typical 56°13° / 37°3°. Rain 0.54 in14 mm, 50% chance. Forecasts differ.
Morning
6 AM–noon
Drizzle, 59°15°40% chance · 0.06 in1.4 mm
Afternoon
noon–6 PM
Drizzle, 61°16°40% chance · 0.38 in9.7 mm
Evening
6 PM–midnight
Drizzle, 59°15°40% chance · 0.12 in3 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
- 60°16°–67°19°
- Low, likely
- 49°9°–63°17°
- Typical high / low
- 56°13° / 37°3°
- Wind
- 22 mph35 km/h, gusts 39 mph63 km/h
- UV peak
- 3
The outlook
Today
Dry, high 74°, low 48°.
Tomorrow
Dry, high 76°, low 50°.
Monday
Dry, high 73°, low 48°, cooling off.
Rest of week
Highs 63–76°; chance of precipitation on Sunday, Monday.
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
Rivers
NOAA river gauges within 25 mi
Below flood stage
Illinois River at Starved Rock Lock (tailwater)
16 mi- Level
- 442 ft
- Flow
- 4,730 cfs
Forecast peak 442 ft Sat 1 PM
Reading from Sat 9 AM · NWS gauge page
Illinois River near La Salle
20 mi- Level
- 11.6 ft
- Flow
- 5,970 cfs
Forecast peak 11.4 ft Sat 1 PM
Reading from Sat 9:45 AM · NWS gauge page
Vermilion River (N-IL) near Leonore
7.8 mi- Level
- 3.5 ft
- Flow
- 45 cfs
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 88% less heating than a typical week.
This week 13Typical 114
Heating degree days, base 65°F
Comfort
Dry air outside (dew point 49°F).
Open the windows?
Today, 11:00 AM–8:00 PM
Good stretch to open the windows (air quality forecast not available for part of this window).
Is this typical?
Ottawa 4sw · official normals 1991–2020 · records 1890–2026
Oct 24, today vs a typical year
Today’s expected high is 14°8° warmer than typical.
- Normal high / low
- 60°16° / 40°4°
- Forecast high / low
- 74°23° / 48°9°
- Record high
- 85°29° in 1963
- Record low
- 21°−6° 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
- +2°+1°TueOct 20
- +5°+3°WedOct 21
- +6°+3°ThuOct 22
- +9°+5°FriOct 23
- —SatOct 24
Streator weather by month: normals, records, snow and freeze dates
Sun & moon
Sun
Sunrise 7:17 AM, sunset 6:01 PM.
- Daylight
- 10 h 44 min
- Losing 2 min 30 s a day; shortest Dec 21, 1 h 31 min less
- Golden hour
- 5:23–6:18 PM
- Morning 6:59–7:55 AM
- Blue hour
- 6:18–6:29 PM
- Morning 6:49–6:59 AM; first light 6:49 AM
Stars tonight? Fair
Mostly clear 7 PM–12 AM, but the moon is 99% lit and up.
Moon
Waxing gibbous
97% lit · growing
- Today
- sets 5:30 AM · rises 4:59 PM
- Full moon
- Oct 25
- New moon
- Nov 9
