Observed 12:15 PM CDT at KSLO

St. Peter, IL weather

Sunny and 72°22°.

Forecasts agree

Now 72°22°

Sunny

Wind: 5 mph8 km/h; From the southeast. Up to 5 mph8 km/h through 1 AM
Dew point: 48°9°; Comfortable
UV index: 4Moderate; Moderate until 4 PM
Pressure: 30.38 inHg1029 hPa; Falling · −0.06 inHg−1.9 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

About the same as this time yesterday (73°23° then, 72°22° now)

Good hours for

High 73°23° today at 2 PM
Below 60°16° tonight after 8 PM
Low 47°8° tomorrow at 6 AM
Above 60°16° tomorrow by 10 AM

This afternoonNear 71°22° · Mostly cloudy
TonightDown to 48°9° by 4 AM · Clear
Tomorrow morningUp to 67°19° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 76°24° by 3 PM · Mostly cloudy
Tomorrow nightDown to 52°11° by 4 AM · Mostly cloudy
Monday morningUp to 68°20° by 11 AM · Mostly cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 1p	Partly sunny	71°22° (likely 69°21° to 71°22°)	71°22°	0%	5 mph8 km/h from SE, gusts 7 mph11 km/h	41%	64%	4
Sat 2p	Cloudy	73°23° (likely 70°21° to 73°23°)	73°23°	0%	5 mph8 km/h from SE, gusts 7 mph11 km/h	38%	68%	4
Sat 3p	Cloudy	73°23° (likely 71°22° to 73°23°)	73°23°	0%	5 mph8 km/h from SE, gusts 7 mph12 km/h	37%	60%	3
Sat 4p	Cloudy	73°23° (likely 70°21° to 73°23°)	73°23°	0%	5 mph8 km/h from SE, gusts 8 mph13 km/h	35%	63%	1
Sat 5p	Partly sunny	71°22° (likely 68°20° to 73°23°)	71°22°	0%	2 mph3 km/h from SE, gusts 8 mph14 km/h	39%	51%	0
Sat 6p	Partly cloudy	68°20° (likely 63°17° to 68°20°)	68°20°	0%	3 mph5 km/h from E, gusts 8 mph13 km/h	44%	43%	0
Sat 7p	Mostly clear	62°17° (likely 60°16° to 64°18°)	62°17°	0%	3 mph5 km/h from E, gusts 8 mph12 km/h	56%	28%	0
Sat 8p	Clear	58°14° (likely 58°14° to 61°16°)	58°14°	0%	2 mph3 km/h from E, gusts 6 mph10 km/h	64%	42%	0
Sat 9p	Clear	56°13° (likely 56°13° to 58°14°)	56°13°	0%	1 mph2 km/h from SE, gusts 7 mph11 km/h	69%	1%	0
Sat 10p	Clear	54°12° (likely 54°12° to 56°13°)	54°12°	0%	1 mph2 km/h from E, gusts 6 mph10 km/h	74%	0%	0
Sat 11p	Clear	53°12° (likely 53°12° to 55°13°)	53°12°	0%	1 mph2 km/h from E, gusts 7 mph11 km/h	74%	0%	0
Sun 12a	Clear	52°11° (likely 52°11° to 54°12°)	52°11°	0%	1 mph2 km/h from E, gusts 6 mph9 km/h	77%	0%	0
Sun 1a	Clear	51°11° (likely 51°11° to 53°12°)	51°11°	0%	1 mph2 km/h from SE, gusts 6 mph10 km/h	80%	0%	0
Sun 2a	Clear	50°10° (likely 50°10° to 52°11°)	50°10°	0%	1 mph2 km/h from SE, gusts 5 mph8 km/h	83%	40%	0
Sun 3a	Partly cloudy	49°9° (likely 49°9° to 51°11°)	49°9°	0%	1 mph2 km/h from E, gusts 5 mph8 km/h	86%	46%	0
Sun 4a	Clear	48°9° (likely 48°9° to 50°10°)	48°9°	0%	1 mph2 km/h from E, gusts 6 mph9 km/h	89%	12%	0
Sun 5a	Partly cloudy	48°9° (likely 48°9° to 49°9°)	48°9°	0%	1 mph2 km/h from E, gusts 5 mph8 km/h	89%	66%	0
Sun 6a	Partly cloudy	47°8° (likely 47°8° to 49°9°)	47°8°	0%	1 mph2 km/h from E, gusts 5 mph9 km/h	93%	75%	0
Sun 7a	Partly sunny	47°8° (likely 47°8° to 48°9°)	47°8°	0%	1 mph2 km/h from E, gusts 5 mph8 km/h	93%	78%	0
Sun 8a	Partly sunny	48°9° (likely 47°8° to 51°11°)	48°9°	0%	1 mph2 km/h from E, gusts 5 mph8 km/h	93%	71%	0
Sun 9a	Partly sunny	55°13° (likely 53°12° to 56°13°)	55°13°	0%	1 mph2 km/h from SE, gusts 5 mph8 km/h	77%	70%	1
Sun 10a	Partly sunny	62°17° (likely 59°15° to 63°17°)	62°17°	0%	1 mph2 km/h from S, gusts 6 mph10 km/h	62%	65%	2
Sun 11a	Partly sunny	67°19° (likely 64°18° to 69°21°)	67°19°	0%	3 mph5 km/h from S, gusts 5 mph9 km/h	52%	62%	3
Sun 12p	Cloudy	71°22° (likely 68°20° to 73°23°)	71°22°	0%	3 mph5 km/h from S, gusts 5 mph7 km/h	44%	64%	4
Sun 1p	Cloudy	73°23° (likely 71°22° to 75°24°)	73°23°	0%	3 mph5 km/h from S, gusts 4 mph6 km/h	40%	78%	4
Sun 2p	Cloudy	75°24° (likely 72°22° to 76°24°)	75°24°	0%	3 mph5 km/h from S, gusts 4 mph6 km/h	36%	73%	4
Sun 3p	Cloudy	76°24° (likely 73°23° to 77°25°)	76°24°	0%	2 mph3 km/h from SE, gusts 4 mph6 km/h	34%	75%	4
Sun 4p	Cloudy	76°24° (likely 72°22° to 77°25°)	76°24°	0%	2 mph3 km/h from SE, gusts 3 mph5 km/h	33%	67%	2
Sun 5p	Cloudy	75°24° (likely 71°22° to 76°24°)	75°24°	0%	0 mph0 km/h, gusts 3 mph5 km/h	37%	68%	1
Sun 6p	Cloudy	71°22° (likely 66°19° to 71°22°)	71°22°	0%	1 mph2 km/h from SE, gusts 3 mph4 km/h	41%	68%	0
Sun 7p	Cloudy	65°18° (likely 63°17° to 67°19°)	65°18°	0%	1 mph2 km/h from SE, gusts 2 mph4 km/h	54%	63%	0
Sun 8p	Cloudy	61°16° (likely 61°16° to 64°18°)	61°16°	0%	1 mph2 km/h from S, gusts 3 mph5 km/h	62%	76%	0
Sun 9p	Cloudy	59°15° (likely 59°15° to 62°17°)	59°15°	0%	1 mph2 km/h from S, gusts 3 mph5 km/h	67%	80%	0
Sun 10p	Cloudy	57°14° (likely 57°14° to 60°16°)	57°14°	0%	1 mph2 km/h from S, gusts 4 mph7 km/h	72%	79%	0
Sun 11p	Cloudy	56°13° (likely 56°13° to 58°14°)	56°13°	0%	1 mph2 km/h from S, gusts 7 mph11 km/h	74%	80%	0
Mon 12a	Cloudy	55°13° (likely 55°13° to 57°14°)	55°13°	0%	1 mph2 km/h from S, gusts 8 mph13 km/h	77%	78%	0
Mon 1a	Cloudy	54°12° (likely 54°12° to 57°14°)	54°12°	0%	1 mph2 km/h from S, gusts 8 mph13 km/h	77%	81%	0
Mon 2a	Cloudy	54°12° (likely 53°12° to 56°13°)	54°12°	0%	1 mph2 km/h from S, gusts 7 mph12 km/h	77%	81%	0
Mon 3a	Cloudy	53°12° (likely 53°12° to 56°13°)	53°12°	0%	1 mph2 km/h from SW, gusts 8 mph12 km/h	80%	86%	0
Mon 4a	Cloudy	52°11° (likely 52°11° to 55°13°)	52°11°	0%	1 mph2 km/h from SW, gusts 8 mph12 km/h	83%	65%	0
Mon 5a	Cloudy	52°11° (likely 52°11° to 54°12°)	52°11°	0%	1 mph2 km/h from SW, gusts 7 mph12 km/h	83%	68%	0
Mon 6a	Cloudy	51°11° (likely 51°11° to 54°12°)	51°11°	0%	1 mph2 km/h from SW, gusts 7 mph11 km/h	86%	81%	0
Mon 7a	Cloudy	51°11° (likely 51°11° to 54°12°)	51°11°	0%	1 mph2 km/h from SW, gusts 6 mph10 km/h	86%	76%	0
Mon 8a	Cloudy	52°11° (likely 52°11° to 58°14°)	52°11°	0%	1 mph2 km/h from SW, gusts 4 mph7 km/h	86%	83%	0
Mon 9a	Cloudy	57°14° (likely 57°14° to 63°17°)	57°14°	0%	0 mph0 km/h, gusts 5 mph8 km/h	77%	85%	1
Mon 10a	Mostly cloudy	63°17° (likely 63°17° to 66°19°)	63°17°	0%	1 mph2 km/h from SW, gusts 7 mph11 km/h	65%	67%	2
Mon 11a	Mostly cloudy	68°20° (likely 68°20° to 71°22°)	68°20°	0%	2 mph3 km/h from SW, gusts 8 mph12 km/h	55%	78%	3
Mon 12p	Mostly cloudy	71°22° (likely 70°21° to 74°23°)	71°22°	0%	3 mph5 km/h from SW, gusts 9 mph15 km/h	47%	68%	3

Days ahead

Tap a day for its hours and the official wording.

Today, Oct 24. Partly sunny. High 73°23°, low 47°8°. Dry. Forecasts agree.
1. Afternoon
  noon–6 PM
  Cloudy, 73°23°
  Dry
2. Evening
  6 PM–midnight
  Clear, 58°14°
  Dry
3. Overnight
  midnight–6 AM
  Partly cloudy, 48°9°
  Dry
Official NWS forecast
Today: Mostly sunny, with a high near 73. Southeast wind around 5 mph.
Tonight: Mostly clear, with a low around 47. Southeast wind around 3 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
71°22°–73°23°
Low, likely
45°7°–47°8°
Wind
8 mph13 km/h, gusts 14 mph23 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 76°24°, low 51°11°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 76°24°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 52°11°
  Dry
Official NWS forecast
Day: Mostly sunny, with a high near 76. Southeast wind 0 to 3 mph.
Night: Mostly cloudy, with a low around 51. South wind around 1 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
73°23°–77°25°
Low, likely
47°8°–51°11°
Wind
6 mph9 km/h
UV peak
4
Monday, Oct 26. Cloudy. High 76°24°, low 49°9°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 75°24°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 62°17°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 53°12°
  Dry
Official NWS forecast
Day: Partly sunny. High near 76, with temperatures falling to around 72 in the afternoon. Southwest wind 0 to 3 mph.
Night: Partly cloudy, with a low around 49.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
73°23°–77°25°
Low, likely
49°9°–53°12°
Wind
8 mph13 km/h
UV peak
4
Tuesday, Oct 27. Cloudy. High 75°24°, low 51°11°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 53°12°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 73°23°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 62°17°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 53°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 75.
Night: Mostly cloudy, with a low around 51.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
71°22°–75°24°
Low, likely
50°10°–54°12°
Wind
9 mph14 km/h, gusts 18 mph29 km/h
UV peak
4
Wednesday, Oct 28. Partly sunny. High 78°26°, low 52°11°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 77°25°
  Dry
3. Evening
  6 PM–midnight
  Clear, 63°17°
  Dry
4. 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 78.
Night: Mostly clear, with a low around 52.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
73°23°–79°26°
Low, likely
49°9°–54°12°
Wind
11 mph18 km/h, gusts 19 mph30 km/h
UV peak
4
Thursday, Oct 29. Mostly sunny. High 77°25°, low 50°10°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 56°13°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 79°26°
  Dry
3. Evening
  6 PM–midnight
  Clear, 65°18°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 54°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 77.
Night: Partly cloudy, with a low around 50.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
76°24°–81°27°
Low, likely
50°10°–56°13°
Wind
13 mph20 km/h, gusts 26 mph42 km/h
UV peak
4
Friday, Oct 30. Cloudy. High 75°24°, low 51°11°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 56°13°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 78°26°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 64°18°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 57°14°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 75.
Night: Mostly cloudy, with a low around 51.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
74°23°–80°27°
Low, likely
51°11°–57°14°
Wind
11 mph18 km/h, gusts 18 mph29 km/h
UV peak
4
Saturday, Oct 31. Drizzle. High 73°23°, low 59°15°. Rain 0.12 in3 mm, 40% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 59°15°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 75°24°
  30% chance
3. Evening
  6 PM–midnight
  Drizzle, 68°20°
  40% chance · 0.04 in1 mm
4. Overnight
  midnight–6 AM
  Drizzle, 65°18°
  50% chance · 0.16 in4 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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
70°21°–76°24°
Low, likely
57°14°–61°16°
Wind
16 mph26 km/h, gusts 24 mph38 km/h
UV peak
3
Sunday, Nov 1. Showers. High 73°23°, low 62°17°. Rain 0.73 in19 mm, 50% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 66°19°
  50% chance · 0.14 in3.6 mm
2. Afternoon
  noon–6 PM
  Drizzle, 74°23°
  40% chance · 0.06 in1.5 mm
3. Evening
  6 PM–midnight
  Showers, 69°21°
  40% chance · 0.4 in10 mm
4. Overnight
  midnight–6 AM
  Drizzle, 54°12°
  40% 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
70°21°–79°26°
Low, likely
61°16°–64°18°
Wind
20 mph32 km/h, gusts 42 mph67 km/h
UV peak
3
Monday, Nov 2. Snow showers. High 65°18°, low 49°9°. Snow 0.39 in9.9 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Snow showers, 53°11°
  40% chance · 0.06 in1.4 mm
2. Afternoon
  noon–6 PM
  Snow showers, 55°13°
  40% chance · 0.12 in3.1 mm
3. Evening
  6 PM–midnight
  Drizzle, 53°12°
  40% chance · 0.03 in0.9 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
59°15°–73°23°
Low, likely
37°3°–66°19°
Wind
21 mph34 km/h, gusts 38 mph62 km/h
UV peak
1

10 days15 days30 days

The outlook

Today
Dry, high 73°, low 47°.
Tomorrow
Dry, high 76°, low 51°, warming up.
Monday
Dry, high 76°, low 49°.
Rest of week
Highs 65–78°; chance of precipitation on Sunday, Monday.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (LSX) (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

Rivers

NOAA river gauges within 25 mi

Kaskaskia River at Vandalia

14 mi

Below flood stage

Level: 2.8 ft
Flow: 94 cfs

Reading from Sat 12 PM · NWS gauge page

Little Wabash River near Effingham

21 mi

Below flood stage

Level: 10.4 ft
Flow: 1 cfs

Reading from Sat 11:30 AM · NWS gauge page

Sun & moon

Sun

Daylight: 10 h 50 min; Losing 2 min 25 s a day; shortest Dec 21, 1 h 24 min less
Golden hour: 5:27–6:21 PM; Morning 6:57–7:50 AM
Blue hour: 6:21–6:31 PM; Morning 6:46–6:57 AM; first light 6:46 AM

Stars tonight? Fair

Mostly clear 9 PM–2 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:28 AM · rises 5:01 PM
Full moon: Oct 25
New moon: Nov 9

Looking west from St. Peter. The highest point on the skyline is about 2,100 ft, 21 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.