Sangamon River at Monticello
13 mi- Level
- 4.9 ft
- Flow
- 52 cfs
Reading from Sat 9 AM · NWS gauge page
Observed 9:25 AM CDT at KDEC
Argenta, IL weather
Sunny and 55°13°, 11°6° warmer than a typical Oct 24, jacket by 9 PM.
Today: low 45°7° (likely 44°7° to 46°8°), high 73°23° (likely 70°21° to 73°23°).
Now 55°13°
Sunny
- Wind
- 3 mph5 km/h
- From the east-southeast. 35–8 mph13 km/h through 9 PM
- Dew point
- 48°9°
- Comfortable
- UV index
- 1Low
- Moderate 11 AM–3 PM · peak 4
- Air quality
- 53Moderate
- Main pollutant: PM2.5 (fine particles)
- Pressure
- 30.42 inHg1030 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 (52°11° then, 51°11° now)
Good hours for
This morningUp to 64°18° by 11 AM · Partly cloudy
This afternoonUp to 73°23° by 3 PM · Mostly cloudy
TonightDown to 47°8° by 4 AM · Partly cloudy
Tomorrow morningUp to 67°19° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 76°24° by 4 PM · Mostly cloudy
Tomorrow nightDown to 49°9° by 5 AM · Mostly cloudy
Monday morningUp to 54°12° by 8 AM · Mostly cloudy
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 9a | Sunny | 53°12° (likely 51°11° to 53°12°) | 53°12° | 0% | 7 mph11 km/h from SE, gusts 8 mph12 km/h | 77% | 33% | 1 |
| Sat 10a | Sunny | 60°16° (likely 58°14° to 60°16°) | 60°16° | 0% | 8 mph13 km/h from SSE, gusts 11 mph17 km/h | 62% | 27% | 2 |
| Sat 11a | Cloudy | 64°18° (likely 62°17° to 66°19°) | 64°18° | 0% | 8 mph13 km/h from SSE, gusts 12 mph19 km/h | 54% | 66% | 3 |
| Sat 12p | Cloudy | 68°20° (likely 66°19° to 69°21°) | 68°20° | 0% | 8 mph13 km/h from SSE, gusts 10 mph16 km/h | 45% | 76% | 4 |
| Sat 1p | Cloudy | 71°22° (likely 69°21° to 71°22°) | 71°22° | 0% | 8 mph13 km/h from SSE, gusts 9 mph14 km/h | 41% | 72% | 4 |
| Sat 2p | Cloudy | 72°22° (likely 70°21° to 72°22°) | 72°22° | 0% | 8 mph13 km/h from SSE, gusts 8 mph13 km/h | 39% | 74% | 3 |
| Sat 3p | Mostly sunny | 73°23° (likely 70°21° to 73°23°) | 73°23° | 0% | 8 mph13 km/h from SSE, gusts 9 mph14 km/h | 38% | 38% | 2 |
| Sat 4p | Mostly cloudy | 73°23° (likely 70°21° to 73°23°) | 73°23° | 0% | 8 mph13 km/h from SSE, gusts 9 mph15 km/h | 38% | 50% | 1 |
| Sat 5p | Cloudy | 72°22° (likely 67°19° to 72°22°) | 72°22° | 0% | 8 mph13 km/h from SSE, gusts 8 mph13 km/h | 39% | 66% | 0 |
| Sat 6p | Partly cloudy | 68°20° (likely 62°17° to 68°20°) | 68°20° | 0% | 7 mph11 km/h from SE, gusts 8 mph14 km/h | 45% | 52% | 0 |
| Sat 7p | Partly cloudy | 63°17° (likely 60°16° to 63°17°) | 63°17° | 0% | 7 mph11 km/h from SE, gusts 9 mph15 km/h | 54% | 65% | 0 |
| Sat 8p | Mostly clear | 58°14° (likely 58°14° to 59°15°) | 58°14° | 0% | 6 mph10 km/h from SE, gusts 11 mph17 km/h | 64% | 53% | 0 |
| Sat 9p | Mostly clear | 55°13° (likely 55°13° to 57°14°) | 55°13° | 0% | 6 mph10 km/h from SE, gusts 11 mph18 km/h | 72% | 45% | 0 |
| Sat 10p | Clear | 54°12° (likely 53°12° to 56°13°) | 54°12° | 0% | 5 mph8 km/h from SE, gusts 11 mph18 km/h | 74% | 8% | 0 |
| Sat 11p | Clear | 52°11° (likely 52°11° to 54°12°) | 52°11° | 0% | 5 mph8 km/h from SE, gusts 11 mph17 km/h | 77% | 1% | 0 |
| Sun 12a | Clear | 51°11° (likely 51°11° to 53°12°) | 51°11° | 0% | 5 mph8 km/h from SE, gusts 10 mph16 km/h | 80% | 0% | 0 |
| Sun 1a | Mostly clear | 50°10° (likely 50°10° to 52°11°) | 48°9° | 0% | 5 mph8 km/h from SE, gusts 9 mph15 km/h | 80% | 52% | 0 |
| Sun 2a | Cloudy | 49°9° (likely 49°9° to 51°11°) | 47°8° | 0% | 5 mph8 km/h from SE, gusts 9 mph14 km/h | 83% | 62% | 0 |
| Sun 3a | Mostly clear | 48°9° (likely 48°9° to 50°10°) | 47°8° | 0% | 3 mph5 km/h from SE, gusts 8 mph13 km/h | 89% | 48% | 0 |
| Sun 4a | Mostly clear | 47°8° (likely 47°8° to 49°9°) | 46°8° | 0% | 3 mph5 km/h from SE, gusts 7 mph12 km/h | 89% | 41% | 0 |
| Sun 5a | Mostly clear | 47°8° (likely 46°8° to 49°9°) | 46°8° | 0% | 3 mph5 km/h from SE, gusts 8 mph13 km/h | 89% | 44% | 0 |
| Sun 6a | Mostly clear | 46°8° (likely 45°7° to 48°9°) | 46°8° | 0% | 2 mph3 km/h from SE, gusts 7 mph12 km/h | 89% | 75% | 0 |
| Sun 7a | Mostly sunny | 45°7° (likely 44°7° to 48°9°) | 45°7° | 0% | 2 mph3 km/h from SE, gusts 7 mph12 km/h | 93% | 71% | 0 |
| Sun 8a | Mostly sunny | 47°8° (likely 45°7° to 50°10°) | 46°8° | 0% | 3 mph5 km/h from SE, gusts 7 mph12 km/h | 93% | 71% | 0 |
| Sun 9a | Mostly sunny | 54°12° (likely 52°11° to 55°13°) | 54°12° | 0% | 3 mph5 km/h from SSE, gusts 7 mph12 km/h | 83% | 47% | 1 |
| Sun 10a | Sunny | 62°17° (likely 59°15° to 62°17°) | 62°17° | 0% | 5 mph8 km/h from SSE, gusts 9 mph14 km/h | 67% | 39% | 2 |
| Sun 11a | Partly sunny | 67°19° (likely 64°18° to 68°20°) | 67°19° | 0% | 5 mph8 km/h from SSE, gusts 8 mph12 km/h | 56% | 74% | 3 |
| Sun 12p | Cloudy | 71°22° (likely 68°20° to 72°22°) | 71°22° | 0% | 3 mph5 km/h from S, gusts 8 mph13 km/h | 47% | 74% | 3 |
| Sun 1p | Cloudy | 73°23° (likely 71°22° to 74°23°) | 73°23° | 0% | 3 mph5 km/h from S, gusts 7 mph11 km/h | 44% | 79% | 4 |
| Sun 2p | Cloudy | 75°24° (likely 72°22° to 75°24°) | 75°24° | 0% | 3 mph5 km/h from S, gusts 6 mph10 km/h | 40% | 79% | 4 |
| Sun 3p | Cloudy | 75°24° (likely 72°22° to 76°24°) | 75°24° | 0% | 3 mph5 km/h from S, gusts 5 mph8 km/h | 38% | 73% | 3 |
| Sun 4p | Cloudy | 76°24° (likely 72°22° to 76°24°) | 76°24° | 0% | 3 mph5 km/h from S, gusts 5 mph8 km/h | 37% | 79% | 2 |
| Sun 5p | Cloudy | 74°23° (likely 69°21° to 74°23°) | 74°23° | 0% | 3 mph5 km/h from SSE, gusts 5 mph8 km/h | 41% | 80% | 1 |
| Sun 6p | Partly cloudy | 71°22° (likely 64°18° to 71°22°) | 71°22° | 0% | 2 mph3 km/h from SSE, gusts 5 mph8 km/h | 44% | 75% | 0 |
| Sun 7p | Partly cloudy | 66°19° (likely 61°16° to 66°19°) | 66°19° | 0% | 2 mph3 km/h from SE, gusts 4 mph7 km/h | 52% | 64% | 0 |
| Sun 8p | Cloudy | 60°16° (likely 59°15° to 62°17°) | 60°16° | 0% | 2 mph3 km/h from SSE, gusts 5 mph9 km/h | 64% | 60% | 0 |
| Sun 9p | Partly cloudy | 58°14° (likely 57°14° to 60°16°) | 58°14° | 0% | 2 mph3 km/h from SSE, gusts 6 mph9 km/h | 69% | 45% | 0 |
| Sun 10p | Clear | 56°13° (likely 56°13° to 57°14°) | 56°13° | 0% | 2 mph3 km/h from SSE, gusts 6 mph10 km/h | 74% | 23% | 0 |
| Sun 11p | Cloudy | 55°13° (likely 54°12° to 56°13°) | 55°13° | 0% | 2 mph3 km/h from SSE, gusts 6 mph10 km/h | 74% | 61% | 0 |
| Mon 12a | Cloudy | 53°12° (likely 53°12° to 55°13°) | 53°12° | 0% | 1 mph2 km/h from S, gusts 7 mph11 km/h | 80% | 83% | 0 |
| Mon 1a | Cloudy | 52°11° (likely 52°11° to 54°12°) | 52°11° | 0% | 1 mph2 km/h from S, gusts 7 mph11 km/h | 80% | 90% | 0 |
| Mon 2a | Cloudy | 52°11° (likely 52°11° to 54°12°) | 52°11° | 0% | 1 mph2 km/h from S, gusts 6 mph10 km/h | 80% | 90% | 0 |
| Mon 3a | Cloudy | 51°11° (likely 51°11° to 54°12°) | 51°11° | 0% | 0 mph0 km/h, gusts 7 mph11 km/h | 80% | 86% | 0 |
| Mon 4a | Cloudy | 50°10° (likely 50°10° to 53°12°) | 50°10° | 0% | 0 mph0 km/h, gusts 6 mph10 km/h | 83% | 86% | 0 |
| Mon 5a | Cloudy | 49°9° (likely 49°9° to 52°11°) | 49°9° | 0% | 0 mph0 km/h, gusts 5 mph8 km/h | 86% | 72% | 0 |
| Mon 6a | Cloudy | 49°9° (likely 49°9° to 53°12°) | 49°9° | 0% | 0 mph0 km/h, gusts 5 mph8 km/h | 83% | 78% | 0 |
| Mon 7a | Cloudy | 48°9° (likely 48°9° to 53°12°) | 48°9° | 0% | 0 mph0 km/h, gusts 5 mph8 km/h | 89% | 85% | 0 |
| Mon 8a | Cloudy | 54°12° (likely 49°9° to 58°14°) | 54°12° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 77% | 84% | 0 |
Days ahead
Shaded: typical range for these dates (1991–2020)
Today, Oct 24. Cloudy. High 73°23°, low 45°7°. Typical 62°17° / 43°6°. Dry. Forecasts agree.
Morning
6 AM–noon
Sunny, 64°18°Dry
Afternoon
noon–6 PM
Mostly sunny, 73°23°Dry
Evening
6 PM–midnight
Mostly clear, 58°14°Dry
Overnight
midnight–6 AM
Mostly clear, 47°8°Dry
Official NWS forecast
Today: Partly sunny, with a high near 73. Southeast wind around 8 mph.
Tonight: Mostly clear, with a low around 45. Southeast wind 3 to 7 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 70°21°–73°23°
- Low, likely
- 44°7°–46°8°
- Typical high / low
- 62°17° / 43°6°
- Wind
- 8 mph13 km/h, gusts 17 mph27 km/h
- UV peak
- 4
Tomorrow, Oct 25. Cloudy. High 76°24°, low 48°9°. Typical 61°16° / 42°6°. Dry. Mostly agree.
Morning
6 AM–noon
Mostly sunny, 47°8°Dry
Afternoon
noon–6 PM
Cloudy, 76°24°Dry
Evening
6 PM–midnight
Partly cloudy, 60°16°Dry
Overnight
midnight–6 AM
Cloudy, 49°9°Dry
Official NWS forecast
Day: Mostly sunny, with a high near 76. South southeast wind around 5 mph.
Night: Mostly cloudy, with a low around 48. South southeast wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 72°22°–76°24°
- Low, likely
- 44°7°–48°9°
- Typical high / low
- 61°16° / 42°6°
- Wind
- 7 mph12 km/h, gusts 14 mph23 km/h
- UV peak
- 4
Monday, Oct 26. Cloudy. High 76°24°, low 48°9°. Typical 60°16° / 42°6°. Dry. Mostly agree.
Morning
6 AM–noon
Cloudy, 54°12°Dry
Afternoon
noon–6 PM
Cloudy, 75°24°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: Partly sunny, with a high near 76. South southeast wind 0 to 3 mph.
Night: Partly cloudy, with a low around 48. East wind around 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 73°23°–76°24°
- Low, likely
- 48°9°–51°11°
- Typical high / low
- 60°16° / 42°6°
- Wind
- 6 mph9 km/h, gusts 11 mph18 km/h
- UV peak
- 4
Tuesday, Oct 27. Cloudy. High 74°23°, low 50°10°. Typical 60°16° / 42°6°. Dry. Mostly agree.
Morning
6 AM–noon
Cloudy, 54°12°Dry
Afternoon
noon–6 PM
Cloudy, 73°23°Dry
Evening
6 PM–midnight
Cloudy, 62°17°Dry
Overnight
midnight–6 AM
Cloudy, 55°13°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 74. South southeast wind 3 to 8 mph.
Night: Mostly cloudy, with a low around 50.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 70°21°–74°23°
- Low, likely
- 48°9°–56°13°
- Typical high / low
- 60°16° / 42°6°
- Wind
- 10 mph15 km/h, gusts 23 mph37 km/h
- UV peak
- 4
Wednesday, Oct 28. Cloudy. High 77°25°, low 52°11°. Typical 60°16° / 41°5°. Dry. Mostly agree.
Morning
6 AM–noon
Partly sunny, 56°13°Dry
Afternoon
noon–6 PM
Sunny, 75°24°Dry
Evening
6 PM–midnight
Clear, 63°17°Dry
Overnight
midnight–6 AM
Clear, 56°13°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
- 52°11°–56°13°
- Typical high / low
- 60°16° / 41°5°
- Wind
- 12 mph20 km/h, gusts 22 mph35 km/h
- UV peak
- 4
Thursday, Oct 29. Cloudy. High 76°24°, low 48°9°. Typical 59°15° / 41°5°. Dry. Forecasts differ.
Morning
6 AM–noon
Sunny, 58°14°Dry
Afternoon
noon–6 PM
Sunny, 76°24°Dry
Evening
6 PM–midnight
Partly cloudy, 65°18°Dry
Overnight
midnight–6 AM
Clear, 55°13°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 76.
Night: Partly cloudy, with a low around 48.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 73°23°–79°26°
- Low, likely
- 48°9°–58°14°
- Typical high / low
- 59°15° / 41°5°
- Wind
- 14 mph22 km/h, gusts 26 mph42 km/h
- UV peak
- 4
Friday, Oct 30. Partly sunny. High 74°23°, low 49°9°. Typical 58°14° / 41°5°. Dry. Mostly agree. Best day outdoors this week.
Morning
6 AM–noon
Mostly sunny, 57°14°Dry
Afternoon
noon–6 PM
Partly sunny, 76°24°Dry
Evening
6 PM–midnight
Cloudy, 64°18°Dry
Overnight
midnight–6 AM
Cloudy, 58°14°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.
Best day outdoors this week: the one dry, mild day the forecasts agree on (high 74°23°).
- High, likely
- 74°23°–78°26°
- Low, likely
- 49°9°–58°14°
- Typical high / low
- 58°14° / 41°5°
- Wind
- 11 mph17 km/h, gusts 24 mph38 km/h
- UV peak
- 4
Saturday, Oct 31. Cloudy. High 73°23°, low 59°15°. Typical 58°14° / 40°4°. Rain 0.1 in2.5 mm, 40% chance. Forecasts differ.
Morning
6 AM–noon
Cloudy, 61°16°20% chance
Afternoon
noon–6 PM
Cloudy, 74°24°30% chance
Evening
6 PM–midnight
Cloudy, 68°20°40% chance
Overnight
midnight–6 AM
Cloudy, 64°18°50% chance · 0.02 in0.6 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
- 55°13°–60°16°
- Typical high / low
- 58°14° / 40°4°
- Wind
- 14 mph22 km/h, gusts 28 mph45 km/h
- UV peak
- 3
Sunday, Nov 1. Showers. High 68°20°, low 61°16°. Typical 57°14° / 40°4°. Rain 0.46 in12 mm, 50% chance. Forecasts agree.
Morning
6 AM–noon
Drizzle, 65°19°50% chance · 0.08 in2.1 mm
Afternoon
noon–6 PM
Drizzle, 67°19°50% chance · 0.16 in4.1 mm
Evening
6 PM–midnight
Showers, 64°18°40% chance · 0.14 in3.5 mm
Overnight
midnight–6 AM
Drizzle, 59°15°40% chance · 0.12 in3.1 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°–70°21°
- Low, likely
- 58°14°–64°18°
- Typical high / low
- 57°14° / 40°4°
- Wind
- 25 mph40 km/h, gusts 41 mph67 km/h
- UV peak
- 1
Monday, Nov 2. Drizzle. High 64°18°, low 56°13°. Typical 57°14° / 40°4°. Rain 0.49 in12 mm, 40% chance. Forecasts differ.
Morning
6 AM–noon
Drizzle, 59°15°40% chance · 0.11 in2.8 mm
Afternoon
noon–6 PM
Rain, 63°17°40% chance · 0.31 in7.9 mm
Evening
6 PM–midnight
Rain, 62°16°40% chance · 0.17 in4.2 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
- 50°10°–65°18°
- Typical high / low
- 57°14° / 40°4°
- Wind
- 23 mph37 km/h, gusts 39 mph63 km/h
- UV peak
- 3
The outlook
Today
Dry, high 73°, low 45°.
Tomorrow
Dry, high 76°, low 48°, warming up.
Monday
Dry, high 76°, low 48°.
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
Below flood stage
Sangamon River at Decatur
14 mi- Level
- 1.8 ft
- Flow
- under 1 cfs
Reading from Sat 8:45 AM · NWS gauge page
Salt Creek (IL) near Rowell
15 mi- Level
- 9.1 ft
- Flow
- 20 cfs
Reading from Sat 8:30 AM · NWS gauge page
North Fork Salt Creek (IL) near De Witt
17 mi- Level
- 691 ft
- Flow
- 62 cfs
Reading from Sat 8:30 AM · NWS gauge page
For your home
What this week’s weather means for heating, cooling, pipes and fresh air.
Heating this week
About 84% less heating than a typical week.
This week 16Typical 99
Heating degree days, base 65°F
Heat-pump hours, next 7 days
- h below 47°F
- 5
- 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 48°F).
Open the windows?
Today, 10:00 AM–7:00 PM
Good stretch to open the windows.
Is this typical?
DECATUR WTP · official normals 1991–2020 · records 1893–2026
Oct 24, today vs a typical year
Today’s expected high is 11°6° warmer than typical.
- Normal high / low
- 62°17° / 43°6°
- Forecast high / low
- 73°23° / 45°7°
- Record high
- 83°28° in 1921
- Record low
- 18°−8° in 1981
Last 7 days vs normal
- —SunOct 18
- —MonOct 19
- —TueOct 20
- —WedOct 21
- —ThuOct 22
- —FriOct 23
- —SatOct 24
Argenta weather by month: normals, records, snow and freeze dates
Sun & moon
Sun
Sunrise 7:15 AM, sunset 6:02 PM.
- Daylight
- 10 h 47 min
- Losing 2 min 25 s a day; shortest Dec 21, 1 h 28 min less
- Golden hour
- 5:25–6:19 PM
- Morning 6:58–7:53 AM
- Blue hour
- 6:19–6:30 PM
- Morning 6:47–6:58 AM; first light 6:47 AM
Stars tonight? Fair
Mostly clear 10 PM–1 AM, but the moon is 99% lit and up.
Moon
Waxing gibbous
97% lit · growing
- Today
- sets 5:29 AM · rises 5:00 PM
- Full moon
- Oct 25
- New moon
- Nov 9
