Observed 4:00 PM CDT at KSPI
Mechanicsburg, IL weather
Sunny and 73°23°, 10°6° warmer than a typical Oct 24.
Today: low 47°8° (likely 45°7° to 47°8°), high 74°23° (likely 72°22° to 74°23°).
Now 73°23°
Sunny
- Wind
- 6 mph9 km/h
- From the east-southeast. 35–6 mph10 km/h through 4 AM
- Dew point
- 43°6°
- Comfortable
- UV tomorrow
- 4Moderate
- Moderate 11 AM–4 PM · peak 4
- Air quality
- 54Moderate
- Main pollutant: Ozone
- Pressure
- 30.33 inHg1027 hPa
- Falling · −0.05 inHg−1.6 hPa in 3 h
Next 2 hours
No precipitation expected in the next 2 hours.
From forecast models
Next 48 hours
This afternoonNear 73°23° · Clear
TonightDown to 48°9° by 5 AM · Partly cloudy
Tomorrow morningUp to 68°20° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 77°25° by 3 PM · Mostly cloudy
Tomorrow nightDown to 51°11° by 4 AM · Mostly cloudy
Monday morningUp to 69°21° by 11 AM · Cloudy
Monday afternoonUp to 77°25° by 3 PM · Mostly cloudy
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 4p | Sunny | 74°23° (likely 71°22° to 74°23°) | 74°23° | 0% | 6 mph10 km/h from SSE, gusts 8 mph13 km/h | 34% | 23% | 1 |
| Sat 5p | Partly sunny | 72°22° (likely 68°20° to 73°23°) | 72°22° | 0% | 6 mph10 km/h from SSE, gusts 9 mph14 km/h | 36% | 26% | 0 |
| Sat 6p | Partly cloudy | 68°20° (likely 63°17° to 68°20°) | 68°20° | 0% | 5 mph8 km/h from SE, gusts 8 mph13 km/h | 43% | 49% | 0 |
| Sat 7p | Partly cloudy | 63°17° (likely 60°16° to 65°18°) | 63°17° | 0% | 5 mph8 km/h from SE, gusts 7 mph11 km/h | 54% | 41% | 0 |
| Sat 8p | Clear | 59°15° (likely 59°15° to 62°17°) | 59°15° | 0% | 5 mph8 km/h from SE, gusts 9 mph15 km/h | 67% | 3% | 0 |
| Sat 9p | Clear | 57°14° (likely 57°14° to 60°16°) | 57°14° | 0% | 5 mph8 km/h from SE, gusts 10 mph15 km/h | 70% | 0% | 0 |
| Sat 10p | Clear | 55°13° (likely 55°13° to 58°14°) | 55°13° | 0% | 5 mph8 km/h from SE, gusts 9 mph15 km/h | 74% | 0% | 0 |
| Sat 11p | Clear | 54°12° (likely 54°12° to 56°13°) | 54°12° | 0% | 3 mph5 km/h from SE, gusts 11 mph17 km/h | 75% | 3% | 0 |
| Sun 12a | Clear | 53°12° (likely 53°12° to 55°13°) | 53°12° | 0% | 3 mph5 km/h from SE, gusts 12 mph19 km/h | 77% | 4% | 0 |
| Sun 1a | Mostly clear | 51°11° (likely 51°11° to 54°12°) | 51°11° | 0% | 3 mph5 km/h from SE, gusts 11 mph18 km/h | 82% | 50% | 0 |
| Sun 2a | Mostly clear | 50°10° (likely 50°10° to 53°12°) | 49°9° | 0% | 3 mph5 km/h from SE, gusts 10 mph16 km/h | 85% | 66% | 0 |
| Sun 3a | Partly cloudy | 49°9° (likely 49°9° to 52°11°) | 48°9° | 0% | 3 mph5 km/h from SE, gusts 9 mph15 km/h | 89% | 59% | 0 |
| Sun 4a | Cloudy | 49°9° (likely 48°9° to 51°11°) | 48°9° | 0% | 3 mph5 km/h from SE, gusts 9 mph14 km/h | 88% | 84% | 0 |
| Sun 5a | Cloudy | 48°9° (likely 48°9° to 50°10°) | 47°8° | 0% | 3 mph5 km/h from SE, gusts 8 mph12 km/h | 90% | 86% | 0 |
| Sun 6a | Cloudy | 47°8° (likely 47°8° to 49°9°) | 46°8° | 0% | 3 mph5 km/h from SE, gusts 7 mph12 km/h | 93% | 88% | 0 |
| Sun 7a | Cloudy | 47°8° (likely 46°8° to 49°9°) | 46°8° | 0% | 3 mph5 km/h from SE, gusts 7 mph12 km/h | 93% | 85% | 0 |
| Sun 8a | Mostly sunny | 48°9° (likely 47°8° to 51°11°) | 47°8° | 0% | 3 mph5 km/h from SE, gusts 8 mph13 km/h | 91% | 77% | 0 |
| Sun 9a | Mostly sunny | 56°13° (likely 53°12° to 56°13°) | 56°13° | 0% | 3 mph5 km/h from SSE, gusts 8 mph12 km/h | 77% | 69% | 1 |
| Sun 10a | Mostly sunny | 62°17° (likely 60°16° to 63°17°) | 62°17° | 0% | 3 mph5 km/h from S, gusts 10 mph15 km/h | 66% | 26% | 2 |
| Sun 11a | Mostly sunny | 68°20° (likely 65°18° to 69°21°) | 68°20° | 0% | 3 mph5 km/h from S, gusts 9 mph15 km/h | 54% | 31% | 3 |
| Sun 12p | Cloudy | 72°22° (likely 69°21° to 73°23°) | 72°22° | 0% | 3 mph5 km/h from S, gusts 8 mph12 km/h | 46% | 72% | 4 |
| Sun 1p | Partly sunny | 75°24° (likely 72°22° to 76°24°) | 75°24° | 0% | 3 mph5 km/h from S, gusts 7 mph11 km/h | 41% | 73% | 4 |
| Sun 2p | Cloudy | 76°24° (likely 73°23° to 78°26°) | 76°24° | 0% | 3 mph5 km/h from SSE, gusts 6 mph9 km/h | 39% | 80% | 4 |
| Sun 3p | Cloudy | 77°25° (likely 73°23° to 78°26°) | 77°25° | 0% | 3 mph5 km/h from SSE, gusts 5 mph8 km/h | 37% | 81% | 3 |
| Sun 4p | Cloudy | 77°25° (likely 73°23° to 78°26°) | 77°25° | 0% | 3 mph5 km/h from SSE, gusts 5 mph9 km/h | 36% | 83% | 2 |
| Sun 5p | Cloudy | 75°24° (likely 70°21° to 77°25°) | 75°24° | 0% | 3 mph5 km/h from SSE, gusts 4 mph7 km/h | 42% | 82% | 1 |
| Sun 6p | Cloudy | 71°22° (likely 65°18° to 72°22°) | 71°22° | 0% | 3 mph5 km/h from SE, gusts 3 mph5 km/h | 47% | 82% | 0 |
| Sun 7p | Cloudy | 66°19° (likely 62°17° to 68°20°) | 66°19° | 0% | 2 mph3 km/h from SE, gusts 4 mph7 km/h | 56% | 82% | 0 |
| Sun 8p | Cloudy | 61°16° (likely 60°16° to 65°18°) | 61°16° | 0% | 2 mph3 km/h from SE, gusts 5 mph8 km/h | 66% | 79% | 0 |
| Sun 9p | Cloudy | 59°15° (likely 59°15° to 61°16°) | 59°15° | 0% | 2 mph3 km/h from SSE, gusts 7 mph11 km/h | 69% | 75% | 0 |
| Sun 10p | Cloudy | 57°14° (likely 57°14° to 59°15°) | 57°14° | 0% | 2 mph3 km/h from SSE, gusts 7 mph11 km/h | 74% | 82% | 0 |
| Sun 11p | Cloudy | 56°13° (likely 55°13° to 58°14°) | 56°13° | 0% | 1 mph2 km/h from SSE, gusts 7 mph11 km/h | 75% | 81% | 0 |
| Mon 12a | Cloudy | 55°13° (likely 55°13° to 57°14°) | 55°13° | 0% | 1 mph2 km/h from SSE, gusts 7 mph11 km/h | 77% | 80% | 0 |
| Mon 1a | Cloudy | 54°12° (likely 54°12° to 56°13°) | 54°12° | 0% | 1 mph2 km/h from SSE, gusts 7 mph12 km/h | 79% | 84% | 0 |
| Mon 2a | Cloudy | 53°12° (likely 53°12° to 55°13°) | 53°12° | 0% | 1 mph2 km/h from SSE, gusts 8 mph13 km/h | 81% | 83% | 0 |
| Mon 3a | Cloudy | 52°11° (likely 52°11° to 55°13°) | 52°11° | 0% | 1 mph2 km/h from SSE, gusts 9 mph14 km/h | 85% | 76% | 0 |
| Mon 4a | Cloudy | 51°11° (likely 51°11° to 54°12°) | 51°11° | 0% | 1 mph2 km/h from SSE, gusts 9 mph14 km/h | 87% | 63% | 0 |
| Mon 5a | Cloudy | 51°11° (likely 51°11° to 54°12°) | 51°11° | 0% | 1 mph2 km/h from SSE, gusts 8 mph13 km/h | 86% | 91% | 0 |
| Mon 6a | Cloudy | 50°10° (likely 50°10° to 53°12°) | 50°10° | 0% | 1 mph2 km/h from SSE, gusts 7 mph12 km/h | 88% | 71% | 0 |
| Mon 7a | Cloudy | 49°9° (likely 49°9° to 52°11°) | 49°9° | 0% | 0 mph0 km/h, gusts 6 mph10 km/h | 91% | 90% | 0 |
| Mon 8a | Mostly sunny | 50°10° (likely 50°10° to 54°12°) | 50°10° | 0% | 1 mph2 km/h from SSE, gusts 7 mph11 km/h | 91% | 84% | 0 |
| Mon 9a | Partly sunny | 56°13° (likely 56°13° to 57°14°) | 56°13° | 0% | 1 mph2 km/h from S, gusts 8 mph13 km/h | 80% | 86% | 1 |
| Mon 10a | Cloudy | 63°17° (likely 62°17° to 66°19°) | 63°17° | 0% | 1 mph2 km/h from S, gusts 10 mph16 km/h | 68% | 89% | 2 |
| Mon 11a | Cloudy | 69°21° (likely 65°18° to 71°22°) | 69°21° | 0% | 1 mph2 km/h from S, gusts 7 mph12 km/h | 57% | 91% | 2 |
| Mon 12p | Cloudy | 72°22° (likely 70°21° to 74°23°) | 72°22° | 0% | 2 mph3 km/h from S, gusts 6 mph10 km/h | 51% | 83% | 3 |
| Mon 1p | Cloudy | 75°24° (likely 72°22° to 76°24°) | 75°24° | 0% | 2 mph3 km/h from S, gusts 7 mph11 km/h | 44% | 83% | 4 |
| Mon 2p | Cloudy | 76°24° (likely 72°22° to 76°24°) | 76°24° | 0% | 2 mph3 km/h from S, gusts 8 mph12 km/h | 42% | 85% | 4 |
| Mon 3p | Partly sunny | 77°25° (likely 73°23° to 77°25°) | 77°25° | 0% | 3 mph5 km/h from S, gusts 8 mph12 km/h | 40% | 83% | 3 |
Days ahead
Today, Oct 24. Cloudy. High 74°23°, low 47°8°. Typical 64°18° / 42°6°. Dry. Forecasts agree.
Afternoon
noon–6 PM
Partly sunny, 74°23°Dry
Evening
6 PM–midnight
Clear, 59°15°Dry
Overnight
midnight–6 AM
Partly cloudy, 48°9°Dry
Official NWS forecast
Today: Mostly sunny, with a high near 74. South southeast wind around 6 mph.
Tonight: Mostly clear, with a low around 47. Southeast wind around 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 72°22°–74°23°
- Low, likely
- 45°7°–47°8°
- Typical high / low
- 64°18° / 42°6°
- Wind
- 9 mph14 km/h, gusts 16 mph26 km/h
- UV peak
- 4
Tomorrow, Oct 25. Cloudy. High 77°25°, low 49°9°. Typical 63°17° / 42°6°. Dry. Mostly agree.
Morning
6 AM–noon
Mostly sunny, 48°9°Dry
Afternoon
noon–6 PM
Cloudy, 77°25°Dry
Evening
6 PM–midnight
Cloudy, 61°16°Dry
Overnight
midnight–6 AM
Cloudy, 51°11°Dry
Official NWS forecast
Day: Mostly sunny, with a high near 77. South southeast wind around 3 mph.
Night: Mostly cloudy, with a low around 49. South southeast wind around 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 73°23°–78°26°
- Low, likely
- 46°8°–49°9°
- Typical high / low
- 63°17° / 42°6°
- Wind
- 7 mph12 km/h, gusts 17 mph27 km/h
- UV peak
- 4
Monday, Oct 26. Cloudy. High 77°25°, low 50°10°. Typical 62°17° / 41°5°. Dry. Mostly agree.
Morning
6 AM–noon
Partly sunny, 50°10°Dry
Afternoon
noon–6 PM
Partly sunny, 77°25°Dry
Evening
6 PM–midnight
Cloudy, 63°17°Dry
Overnight
midnight–6 AM
Cloudy, 54°12°Dry
Official NWS forecast
Day: Mostly sunny, with a high near 77. South wind 0 to 3 mph.
Night: Partly cloudy, with a low around 50. South southeast wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 73°23°–77°25°
- Low, likely
- 50°10°–52°11°
- Typical high / low
- 62°17° / 41°5°
- Wind
- 6 mph10 km/h, gusts 13 mph22 km/h
- UV peak
- 4
Tuesday, Oct 27. Cloudy. High 76°24°, low 52°11°. Typical 62°17° / 41°5°. Dry. Mostly agree.
Morning
6 AM–noon
Cloudy, 54°12°Dry
Afternoon
noon–6 PM
Cloudy, 73°23°Dry
Evening
6 PM–midnight
Cloudy, 63°17°Dry
Overnight
midnight–6 AM
Clear, 55°13°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 76. South southeast wind 2 to 7 mph.
Night: Mostly cloudy, with a low around 52.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 70°21°–76°24°
- Low, likely
- 50°10°–56°13°
- Typical high / low
- 62°17° / 41°5°
- Wind
- 10 mph16 km/h, gusts 20 mph31 km/h
- UV peak
- 3
Wednesday, Oct 28. Partly sunny. High 79°26°, low 55°13°. Typical 62°17° / 41°5°. Dry. Mostly agree.
Morning
6 AM–noon
Mostly sunny, 56°13°Dry
Afternoon
noon–6 PM
Sunny, 75°24°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 79.
Night: Mostly clear, with a low around 55.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 74°23°–79°26°
- Low, likely
- 52°11°–56°13°
- Typical high / low
- 62°17° / 41°5°
- Wind
- 12 mph20 km/h, gusts 22 mph35 km/h
- UV peak
- 3
Thursday, Oct 29. Mostly sunny. High 81°27°, low 55°13°. Typical 61°16° / 40°4°. Dry. Mostly agree.
Morning
6 AM–noon
Partly sunny, 58°15°Dry
Afternoon
noon–6 PM
Sunny, 79°26°Dry
Evening
6 PM–midnight
Clear, 68°20°Dry
Overnight
midnight–6 AM
Mostly clear, 58°15°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 81.
Night: Mostly clear, with a low around 55.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 76°24°–81°27°
- Low, likely
- 55°13°–58°14°
- Typical high / low
- 61°16° / 40°4°
- Wind
- 14 mph22 km/h, gusts 27 mph43 km/h
- UV peak
- 4
Friday, Oct 30. Cloudy. High 80°27°, low 57°14°. Typical 60°16° / 40°4°. Dry. Forecasts differ.
Morning
6 AM–noon
Partly sunny, 60°16°Dry
Afternoon
noon–6 PM
Cloudy, 78°26°Dry
Evening
6 PM–midnight
Cloudy, 67°20°Dry
Overnight
midnight–6 AM
Cloudy, 59°15°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 80.
Night: Mostly cloudy, with a low around 57.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 75°24°–81°27°
- Low, likely
- 55°13°–60°16°
- Typical high / low
- 60°16° / 40°4°
- Wind
- 13 mph21 km/h, gusts 25 mph40 km/h
- UV peak
- 3
Saturday, Oct 31. Drizzle. High 73°23°, low 60°16°. Typical 60°16° / 40°4°. Rain 0.09 in2.3 mm, 50% chance. Mostly agree.
Morning
6 AM–noon
Cloudy, 61°16°30% chance
Afternoon
noon–6 PM
Cloudy, 75°24°40% chance
Evening
6 PM–midnight
Drizzle, 67°19°50% chance · 0.05 in1.3 mm
Overnight
midnight–6 AM
Drizzle, 63°17°50% chance · 0.13 in3.3 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
- 72°22°–75°24°
- Low, likely
- 57°14°–62°17°
- Typical high / low
- 60°16° / 40°4°
- Wind
- 22 mph35 km/h
- UV peak
- 2
Sunday, Nov 1. Showers. High 72°22°, low 61°16°. Typical 60°16° / 39°4°. Rain 0.58 in15 mm, 50% chance. Mostly agree.
Morning
6 AM–noon
Drizzle, 65°18°40% chance · 0.08 in2.1 mm
Afternoon
noon–6 PM
Showers, 72°22°30% chance · 0.08 in2.1 mm
Evening
6 PM–midnight
Showers, 65°18°40% chance · 0.34 in8.7 mm
Overnight
midnight–6 AM
Drizzle, 51°11°40% 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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 70°21°–75°24°
- Low, likely
- 57°14°–62°17°
- Typical high / low
- 60°16° / 39°4°
- Wind
- 19 mph30 km/h, gusts 44 mph70 km/h
- UV peak
- 3
Monday, Nov 2. Showers. High 64°18°, low 50°10°. Typical 59°15° / 39°4°. Rain 0.5 in13 mm, 40% chance. Forecasts differ.
Morning
6 AM–noon
Showers, 50°10°40% chance · 0.13 in3.4 mm
Afternoon
noon–6 PM
Drizzle, 54°12°40% chance · 0.27 in7 mm
Evening
6 PM–midnight
Drizzle, 53°11°40% chance · 0.22 in5.6 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
- 54°12°–70°21°
- Low, likely
- 37°3°–65°18°
- Typical high / low
- 59°15° / 39°4°
- Wind
- 21 mph34 km/h, gusts 39 mph63 km/h
The outlook
Today
Dry, high 74°, low 47°.
Tomorrow
Dry, high 77°, low 49°, warming up.
Monday
Dry, high 77°, low 50°.
Rest of week
Highs 64–81°; chance of precipitation on Saturday, 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
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.
Heating degree days, base 65°F
Heat-pump hours, next 7 days
- h below 47°F
- 2
- 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 43°F).
Open the windows?
Today, 5:00 PM–7:00 PM
Good stretch to open the windows.
Is this typical?
Oct 24, today vs a typical year
Today’s expected high is 10°6° warmer than typical.
- Normal high / low
- 64°18° / 42°6°
- Forecast high / low
- 74°23° / 47°8°
- Record high
- 83°28° in 1963
- Record low
- 23°−5° in 1981
Last 7 days vs normal
On average 2°1° warmer than normal (daily mean temperature).
- −3°−2°SunOct 18
- −1°MonOct 19
- +1°TueOct 20
- +4°+2°WedOct 21
- +6°+3°ThuOct 22
- +8°+4°FriOct 23
- —SatOct 24
Mechanicsburg weather by month: normals, records, snow and freeze dates
Sun & moon
Sun
Sunrise 7:17 AM, sunset 6:05 PM.
- Daylight
- 10 h 48 min
- Losing 2 min 25 s a day; shortest Dec 21, 1 h 27 min less
- Golden hour
- 5:28–6:22 PM
- Morning 7:00–7:55 AM
- Blue hour
- 6:22–6:33 PM
- Morning 6:50–7:00 AM; first light 6:50 AM
Stars tonight? Fair
Mostly clear 8 PM–1 AM, but the moon is 99% lit and up.
Moon
Waxing gibbous
98% lit · growing
- Today
- sets 5:31 AM · rises 5:03 PM
- Full moon
- Oct 25
- New moon
- Nov 9
