Observed 6:50 AM CDT at KALN

Chesterfield, IL weather

Clear and 45°7°.

Forecasts agree

Now 45°7°

Clear

Wind: Calm; Up to 5 mph8 km/h through 8 PM
Dew point: 45°7°; Comfortable
Humidity: 86%; Air 45°7°, dew point 45°7° · fog or dew likely
UV index: 0Low; Moderate 11 AM–4 PM · peak 4

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

3°2° cooler than this time yesterday (48°9° then, 45°7° now)

Good hours for

Above 60°16° today by 10 AM
High 75°24° today at 4 PM
Drops 12°7° tonight 6–9 PM (70°21° → 58°14°)
Below 60°16° tonight after 8 PM
Drops 12°7° tomorrow night 6–9 PM (73°23° → 61°16°)

This morningUp to 65°18° by 11 AM · Partly cloudy
This afternoonUp to 75°24° by 4 PM · Partly cloudy
TonightDown to 48°9° by 4 AM · Partly cloudy
Tomorrow morningUp to 68°20° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 78°26° by 4 PM · Mostly cloudy
Tomorrow nightDown to 50°10° by 5 AM · 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 8a	Mostly sunny	49°9° (likely 47°8° to 52°11°)	48°9°	0%	3 mph5 km/h from SE, gusts 8 mph13 km/h	86%	46%	0
Sat 9a	Partly sunny	54°12° (likely 54°12° to 57°14°)	54°12°	0%	5 mph8 km/h from SE, gusts 8 mph13 km/h	77%	63%	1
Sat 10a	Partly sunny	61°16° (likely 61°16° to 63°17°)	61°16°	0%	5 mph8 km/h from SE, gusts 11 mph17 km/h	60%	42%	2
Sat 11a	Partly sunny	65°18° (likely 65°18° to 67°19°)	65°18°	0%	5 mph8 km/h from S, gusts 11 mph17 km/h	50%	73%	3
Sat 12p	Partly sunny	70°21° (likely 69°21° to 71°22°)	70°21°	0%	5 mph8 km/h from S, gusts 9 mph15 km/h	41%	70%	4
Sat 1p	Partly sunny	72°22° (likely 72°22° to 73°23°)	72°22°	0%	5 mph8 km/h from S, gusts 8 mph12 km/h	37%	67%	4
Sat 2p	Partly sunny	74°23° (likely 73°23° to 75°24°)	74°23°	0%	3 mph5 km/h from SE, gusts 7 mph12 km/h	33%	58%	4
Sat 3p	Cloudy	74°23° (likely 73°23° to 75°24°)	74°23°	0%	3 mph5 km/h from SE, gusts 8 mph12 km/h	32%	61%	4
Sat 4p	Cloudy	75°24° (likely 73°23° to 75°24°)	75°24°	0%	3 mph5 km/h from SE, gusts 8 mph13 km/h	31%	60%	2
Sat 5p	Partly sunny	73°23° (likely 70°21° to 74°23°)	73°23°	0%	3 mph5 km/h from SE, gusts 9 mph15 km/h	34%	24%	1
Sat 6p	Clear	70°21° (likely 65°18° to 70°21°)	70°21°	0%	3 mph5 km/h from SE, gusts 8 mph13 km/h	39%	41%	0
Sat 7p	Clear	65°18° (likely 62°17° to 65°18°)	65°18°	0%	3 mph5 km/h from SE, gusts 9 mph14 km/h	48%	40%	0
Sat 8p	Clear	58°14° (likely 58°14° to 62°17°)	58°14°	0%	3 mph5 km/h from SE, gusts 10 mph15 km/h	64%	40%	0
Sat 9p	Clear	57°14° (likely 57°14° to 61°16°)	57°14°	0%	3 mph5 km/h from SE, gusts 10 mph16 km/h	64%	38%	0
Sat 10p	Clear	55°13° (likely 55°13° to 59°15°)	55°13°	0%	3 mph5 km/h from SE, gusts 11 mph17 km/h	72%	41%	0
Sat 11p	Clear	54°12° (likely 54°12° to 58°14°)	54°12°	0%	2 mph3 km/h from SE, gusts 11 mph17 km/h	71%	39%	0
Sun 12a	Clear	53°12° (likely 53°12° to 57°14°)	53°12°	0%	2 mph3 km/h from SE, gusts 10 mph17 km/h	74%	9%	0
Sun 1a	Mostly clear	52°11° (likely 52°11° to 56°13°)	52°11°	0%	2 mph3 km/h from SE, gusts 10 mph16 km/h	71%	59%	0
Sun 2a	Mostly clear	51°11° (likely 51°11° to 55°13°)	51°11°	0%	2 mph3 km/h from SE, gusts 10 mph16 km/h	74%	47%	0
Sun 3a	Mostly clear	50°10° (likely 50°10° to 54°12°)	50°10°	0%	2 mph3 km/h from SE, gusts 9 mph15 km/h	80%	62%	0
Sun 4a	Mostly clear	48°9° (likely 48°9° to 53°12°)	48°9°	0%	2 mph3 km/h from SE, gusts 9 mph15 km/h	83%	76%	0
Sun 5a	Mostly clear	48°9° (likely 48°9° to 52°11°)	48°9°	0%	2 mph3 km/h from SE, gusts 9 mph14 km/h	83%	54%	0
Sun 6a	Mostly clear	48°9° (likely 48°9° to 51°11°)	48°9°	0%	2 mph3 km/h from SE, gusts 8 mph13 km/h	83%	71%	0
Sun 7a	Mostly sunny	47°8° (likely 47°8° to 51°11°)	47°8°	0%	2 mph3 km/h from SE, gusts 8 mph14 km/h	86%	75%	0
Sun 8a	Mostly sunny	48°9° (likely 48°9° to 53°12°)	48°9°	0%	2 mph3 km/h from SE, gusts 8 mph13 km/h	89%	66%	0
Sun 9a	Mostly sunny	55°13° (likely 55°13° to 58°14°)	55°13°	0%	2 mph3 km/h from SE, gusts 7 mph12 km/h	74%	67%	1
Sun 10a	Mostly sunny	63°17° (likely 62°17° to 64°18°)	63°17°	0%	2 mph3 km/h from S, gusts 9 mph14 km/h	58%	59%	2
Sun 11a	Cloudy	68°20° (likely 67°19° to 70°21°)	68°20°	0%	3 mph5 km/h from S, gusts 8 mph13 km/h	49%	75%	3
Sun 12p	Cloudy	72°22° (likely 71°22° to 74°23°)	72°22°	0%	3 mph5 km/h from S, gusts 7 mph11 km/h	41%	78%	4
Sun 1p	Cloudy	75°24° (likely 74°23° to 76°24°)	75°24°	0%	3 mph5 km/h from S, gusts 6 mph9 km/h	36%	79%	4
Sun 2p	Cloudy	76°24° (likely 75°24° to 77°25°)	76°24°	0%	2 mph3 km/h from S, gusts 6 mph9 km/h	34%	80%	4
Sun 3p	Cloudy	77°25° (likely 75°24° to 78°26°)	77°25°	0%	2 mph3 km/h from S, gusts 5 mph8 km/h	32%	80%	3
Sun 4p	Cloudy	78°26° (likely 75°24° to 78°26°)	78°26°	0%	2 mph3 km/h from S, gusts 5 mph8 km/h	31%	78%	2
Sun 5p	Cloudy	76°24° (likely 72°22° to 76°24°)	76°24°	0%	1 mph2 km/h from S, gusts 5 mph8 km/h	34%	80%	1
Sun 6p	Cloudy	73°23° (likely 67°19° to 73°23°)	73°23°	0%	1 mph2 km/h from S, gusts 6 mph9 km/h	40%	80%	0
Sun 7p	Cloudy	68°20° (likely 64°18° to 68°20°)	68°20°	0%	1 mph2 km/h from S, gusts 6 mph9 km/h	49%	80%	0
Sun 8p	Cloudy	61°16° (likely 61°16° to 64°18°)	61°16°	0%	1 mph2 km/h from SE, gusts 7 mph11 km/h	62%	81%	0
Sun 9p	Cloudy	58°14° (likely 58°14° to 62°17°)	58°14°	0%	1 mph2 km/h from SE, gusts 7 mph11 km/h	72%	81%	0
Sun 10p	Cloudy	57°14° (likely 57°14° to 61°16°)	57°14°	0%	1 mph2 km/h from SE, gusts 9 mph14 km/h	75%	83%	0
Sun 11p	Cloudy	56°13° (likely 56°13° to 61°16°)	56°13°	0%	1 mph2 km/h from SE, gusts 8 mph13 km/h	74%	85%	0
Mon 12a	Cloudy	55°13° (likely 55°13° to 61°16°)	55°13°	0%	1 mph2 km/h from S, gusts 8 mph12 km/h	74%	88%	0
Mon 1a	Cloudy	54°12° (likely 54°12° to 60°16°)	54°12°	0%	1 mph2 km/h from S, gusts 7 mph11 km/h	74%	94%	0
Mon 2a	Cloudy	53°12° (likely 53°12° to 60°16°)	53°12°	0%	1 mph2 km/h from S, gusts 5 mph9 km/h	77%	97%	0
Mon 3a	Cloudy	52°11° (likely 52°11° to 60°16°)	52°11°	0%	1 mph2 km/h from S, gusts 4 mph7 km/h	80%	94%	0
Mon 4a	Cloudy	51°11° (likely 51°11° to 59°15°)	51°11°	0%	1 mph2 km/h from S, gusts 4 mph7 km/h	83%	89%	0
Mon 5a	Cloudy	50°10° (likely 50°10° to 58°14°)	50°10°	0%	1 mph2 km/h from S, gusts 4 mph6 km/h	86%	97%	0
Mon 6a	Cloudy	49°9° (likely 49°9° to 58°14°)	49°9°	0%	0 mph0 km/h, gusts 4 mph6 km/h	89%	96%	0
Mon 7a	Cloudy	49°9° (likely 49°9° to 58°14°)	49°9°	0%	0 mph0 km/h, gusts 4 mph7 km/h	89%	90%	0

Days ahead

Tap a day for its hours and the official wording.

Today, Oct 24. Cloudy. High 75°24°, low 46°8°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Partly sunny, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 75°24°
  Dry
3. Evening
  6 PM–midnight
  Clear, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 48°9°
  Dry
Official NWS forecast
Today: Mostly sunny, with a high near 75. Southeast wind around 5 mph.
Tonight: Mostly clear, with a low around 46. Southeast wind around 3 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
73°23°–75°24°
Low, likely
46°8°–50°10°
Wind
8 mph12 km/h, gusts 17 mph27 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 78°26°, low 49°9°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 78°26°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 50°10°
  Dry
Official NWS forecast
Day: Mostly sunny, with a high near 78. South wind around 3 mph.
Night: Mostly cloudy, with a low around 49. Southeast wind around 1 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
75°24°–78°26°
Low, likely
48°9°–51°11°
Wind
7 mph11 km/h, gusts 15 mph24 km/h
UV peak
4
Monday, Oct 26. Cloudy. High 77°25°, low 48°9°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 76°24°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 62°17°
  Dry
4. 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 77. South wind around 2 mph.
Night: Mostly cloudy, with a low around 48.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
74°23°–77°25°
Low, likely
48°9°–56°13°
Wind
7 mph12 km/h
UV peak
4
Tuesday, Oct 27. Cloudy. High 75°24°, low 50°10°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 54°12°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 72°22°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 62°17°
  Dry
4. 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 75.
Night: Mostly cloudy, with a low around 50.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
70°21°–75°24°
Low, likely
49°9°–56°13°
Wind
10 mph17 km/h, gusts 22 mph35 km/h
UV peak
3
Wednesday, Oct 28. Cloudy. High 78°26°, low 50°10°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 56°13°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 76°24°
  Dry
3. Evening
  6 PM–midnight
  Clear, 65°18°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 57°14°
  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 50.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
74°23°–78°26°
Low, likely
50°10°–55°13°
Wind
11 mph18 km/h, gusts 22 mph35 km/h
UV peak
4
Thursday, Oct 29. Mostly sunny. High 77°25°, low 49°9°. Dry. Mostly agree. Best day outdoors this week.
1. Morning
  6 AM–noon
  Mostly sunny, 59°15°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 78°25°
  Dry
3. Evening
  6 PM–midnight
  Clear, 66°19°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 57°14°
  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 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 77°25°).
High, likely
75°24°–79°26°
Low, likely
49°9°–59°15°
Wind
12 mph20 km/h, gusts 26 mph42 km/h
UV peak
3
Friday, Oct 30. Cloudy. High 75°24°, low 50°10°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 59°15°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 77°25°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 66°19°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 60°16°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 75.
Night: A slight chance of rain showers after 1am. Mostly cloudy, with a low around 50. Chance of precipitation is 20%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
75°24°–80°27°
Low, likely
50°10°–58°14°
Wind
11 mph18 km/h, gusts 19 mph30 km/h
UV peak
3
Saturday, Oct 31. Cloudy. High 73°23°, low 61°16°. Rain 0.1 in2.5 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 64°18°
  30% chance
2. Afternoon
  noon–6 PM
  Cloudy, 74°23°
  30% chance
3. Evening
  6 PM–midnight
  Cloudy, 69°21°
  40% chance · 0.02 in0.5 mm
4. Overnight
  midnight–6 AM
  Cloudy, 66°19°
  50% chance · 0.07 in1.8 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 differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
68°20°–81°27°
Low, likely
59°15°–63°17°
Wind
12 mph19 km/h, gusts 22 mph35 km/h
Sunday, Nov 1. Drizzle. High 71°22°, low 63°17°. Rain 0.44 in11 mm, 50% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 66°19°
  50% chance · 0.12 in2.9 mm
2. Afternoon
  noon–6 PM
  Drizzle, 68°20°
  40% chance · 0.1 in2.6 mm
3. Evening
  6 PM–midnight
  Drizzle, 67°19°
  40% chance · 0.07 in1.7 mm
4. Overnight
  midnight–6 AM
  Drizzle, 58°14°
  40% chance · 0.11 in2.7 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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
69°21°–73°23°
Low, likely
60°16°–64°18°
Wind
24 mph38 km/h, gusts 46 mph74 km/h
UV peak
1
Monday, Nov 2. Drizzle. High 66°19°, low 57°14°. Rain 0.49 in12 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 59°15°
  40% chance · 0.13 in3.4 mm
2. Afternoon
  noon–6 PM
  Drizzle, 60°16°
  30% chance · 0.24 in6.1 mm
3. Evening
  6 PM–midnight
  Drizzle, 62°17°
  30% chance · 0.13 in3.4 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°–71°22°
Low, likely
46°8°–66°19°
Wind
23 mph36 km/h, gusts 38 mph62 km/h
UV peak
4

10 days15 days30 days

The outlook

Today
Dry, high 75°, low 46°.
Tomorrow
Dry, high 78°, low 49°, warming up.
Monday
Dry, high 77°, low 48°.
Rest of week
Highs 66–78°; 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

Sun & moon

Sun

Daylight: 10 h 49 min; Losing 2 min 25 s a day; shortest Dec 21, 1 h 25 min less
Golden hour: 5:31–6:25 PM; Morning 7:02–7:56 AM
Blue hour: 6:25–6:36 PM; Morning 6:52–7:02 AM; first light 6:52 AM

Stars tonight? Poor

Clouds most of the night (about 47% cover).

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:34 AM · rises 5:06 PM
Full moon: Oct 25
New moon: Nov 9

Looking west from Chesterfield. A level horizon.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Chesterfield, IL weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Sun & moon

Sun

Stars tonight? Poor

Moon