South Fork Sangamon River near Rochester
17 mi- Level
- 5.0 ft
- Flow
- 5 cfs
Reading from Sat 3:45 PM · NWS gauge page
Observed 4:10 PM CDT at KSPI
Thayer, IL weather
Sunny and 73°23°.
Today: low 48°9° (likely 46°8° to 48°9°), high 75°24° (likely 73°23° to 75°24°).
Now 73°23°
Sunny
- Wind
- 6 mph9 km/h
- From the east-northeast. Up to 6 mph9 km/h through 4 AM
- Dew point
- 45°7°
- Comfortable
- UV tomorrow
- 4Moderate
- Moderate 11 AM–4 PM · peak 4
- Air quality
- 61Moderate
- Main pollutant: Ozone
- Pressure
- 30.33 inHg1027 hPa
- Falling slowly · −0.04 inHg−1.2 hPa in 3 h
Next 2 hours
No precipitation expected in the next 2 hours.
From forecast models
Next 48 hours
Good hours for
This afternoonNear 74°23° · Clear
TonightDown to 49°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 78°26° by 3 PM · Mostly cloudy
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 4p | Partly sunny | 75°24° (likely 71°22° to 75°24°) | 75°24° | 0% | 5 mph8 km/h from SSE, gusts 8 mph13 km/h | 33% | 25% | 1 |
| Sat 5p | Sunny | 73°23° (likely 69°21° to 74°23°) | 73°23° | 0% | 5 mph8 km/h from SSE, gusts 8 mph12 km/h | 35% | 9% | 0 |
| Sat 6p | Clear | 69°21° (likely 64°18° to 69°21°) | 69°21° | 0% | 3 mph5 km/h from SE, gusts 8 mph14 km/h | 41% | 3% | 0 |
| Sat 7p | Clear | 63°17° (likely 61°16° to 64°18°) | 63°17° | 0% | 3 mph5 km/h from SE, gusts 9 mph15 km/h | 52% | 0% | 0 |
| Sat 8p | Clear | 59°15° (likely 59°15° to 62°17°) | 59°15° | 0% | 3 mph5 km/h from SE, gusts 11 mph17 km/h | 65% | 0% | 0 |
| Sat 9p | Clear | 57°14° (likely 57°14° to 60°16°) | 57°14° | 0% | 3 mph5 km/h from SSE, gusts 10 mph16 km/h | 70% | 0% | 0 |
| Sat 10p | Clear | 56°13° (likely 56°13° to 58°14°) | 56°13° | 0% | 3 mph5 km/h from SSE, gusts 10 mph17 km/h | 72% | 8% | 0 |
| Sat 11p | Mostly clear | 55°13° (likely 55°13° to 57°14°) | 55°13° | 0% | 3 mph5 km/h from SSE, gusts 11 mph18 km/h | 72% | 11% | 0 |
| Sun 12a | Clear | 54°12° (likely 53°12° to 55°13°) | 54°12° | 0% | 3 mph5 km/h from SSE, gusts 9 mph15 km/h | 72% | 27% | 0 |
| Sun 1a | Partly cloudy | 52°11° (likely 52°11° to 54°12°) | 52°11° | 0% | 3 mph5 km/h from SSE, gusts 10 mph16 km/h | 76% | 28% | 0 |
| Sun 2a | Partly cloudy | 51°11° (likely 51°11° to 53°12°) | 51°11° | 0% | 2 mph3 km/h from SSE, gusts 10 mph17 km/h | 78% | 50% | 0 |
| Sun 3a | Partly cloudy | 50°10° (likely 50°10° to 53°12°) | 50°10° | 0% | 2 mph3 km/h from SSE, gusts 11 mph17 km/h | 82% | 46% | 0 |
| Sun 4a | Cloudy | 50°10° (likely 50°10° to 52°11°) | 49°9° | 0% | 3 mph5 km/h from SSE, gusts 10 mph16 km/h | 83% | 82% | 0 |
| Sun 5a | Cloudy | 49°9° (likely 49°9° to 51°11°) | 49°9° | 0% | 2 mph3 km/h from SSE, gusts 9 mph14 km/h | 86% | 85% | 0 |
| Sun 6a | Mostly clear | 48°9° (likely 48°9° to 50°10°) | 48°9° | 0% | 2 mph3 km/h from SSE, gusts 8 mph13 km/h | 88% | 74% | 0 |
| Sun 7a | Mostly sunny | 48°9° (likely 48°9° to 50°10°) | 48°9° | 0% | 2 mph3 km/h from SSE, gusts 9 mph14 km/h | 88% | 76% | 0 |
| Sun 8a | Cloudy | 49°9° (likely 49°9° to 52°11°) | 49°9° | 0% | 2 mph3 km/h from SSE, gusts 9 mph14 km/h | 86% | 88% | 0 |
| Sun 9a | Cloudy | 56°13° (likely 55°13° to 57°14°) | 56°13° | 0% | 3 mph5 km/h from S, gusts 9 mph14 km/h | 74% | 82% | 1 |
| Sun 10a | Cloudy | 63°17° (likely 61°16° to 65°18°) | 63°17° | 0% | 2 mph3 km/h from S, gusts 10 mph17 km/h | 62% | 78% | 2 |
| Sun 11a | Partly sunny | 68°20° (likely 66°19° to 71°22°) | 68°20° | 0% | 3 mph5 km/h from S, gusts 9 mph14 km/h | 51% | 47% | 3 |
| Sun 12p | Sunny | 72°22° (likely 70°21° to 75°24°) | 72°22° | 0% | 3 mph5 km/h from S, gusts 7 mph12 km/h | 43% | 46% | 4 |
| Sun 1p | Cloudy | 75°24° (likely 72°22° to 77°25°) | 75°24° | 0% | 3 mph5 km/h from S, gusts 6 mph10 km/h | 38% | 80% | 4 |
| Sun 2p | Cloudy | 76°24° (likely 74°23° to 78°26°) | 76°24° | 0% | 3 mph5 km/h from S, gusts 5 mph8 km/h | 36% | 82% | 4 |
| Sun 3p | Cloudy | 77°25° (likely 74°23° to 79°26°) | 77°25° | 0% | 2 mph3 km/h from SSE, gusts 5 mph8 km/h | 34% | 82% | 4 |
| Sun 4p | Cloudy | 77°25° (likely 74°23° to 79°26°) | 77°25° | 0% | 2 mph3 km/h from SSE, gusts 5 mph9 km/h | 34% | 82% | 2 |
| Sun 5p | Cloudy | 75°24° (likely 71°22° to 78°26°) | 75°24° | 0% | 2 mph3 km/h from SSE, gusts 6 mph9 km/h | 39% | 80% | 1 |
| Sun 6p | Cloudy | 71°22° (likely 66°19° to 72°22°) | 71°22° | 0% | 2 mph3 km/h from SSE, gusts 5 mph9 km/h | 45% | 80% | 0 |
| Sun 7p | Cloudy | 66°19° (likely 63°17° to 68°20°) | 66°19° | 0% | 2 mph3 km/h from SSE, gusts 6 mph10 km/h | 54% | 80% | 0 |
| Sun 8p | Cloudy | 61°16° (likely 61°16° to 65°18°) | 61°16° | 0% | 1 mph2 km/h from SSE, gusts 7 mph11 km/h | 66% | 80% | 0 |
| Sun 9p | Cloudy | 58°14° (likely 58°14° to 62°17°) | 58°14° | 0% | 1 mph2 km/h from SSE, gusts 8 mph13 km/h | 74% | 81% | 0 |
| Sun 10p | Cloudy | 57°14° (likely 57°14° to 61°16°) | 57°14° | 0% | 1 mph2 km/h from SSE, gusts 9 mph14 km/h | 75% | 82% | 0 |
| Sun 11p | Cloudy | 56°13° (likely 56°13° to 60°16°) | 56°13° | 0% | 1 mph2 km/h from SSE, gusts 9 mph15 km/h | 75% | 83% | 0 |
| Mon 12a | Cloudy | 55°13° (likely 55°13° to 60°16°) | 55°13° | 0% | 1 mph2 km/h from SSE, gusts 9 mph15 km/h | 76% | 79% | 0 |
| Mon 1a | Cloudy | 54°12° (likely 54°12° to 59°15°) | 54°12° | 0% | 1 mph2 km/h from SSE, gusts 10 mph17 km/h | 78% | 82% | 0 |
| Mon 2a | Cloudy | 53°12° (likely 53°12° to 58°14°) | 53°12° | 0% | 1 mph2 km/h from SSE, gusts 10 mph17 km/h | 79% | 82% | 0 |
| Mon 3a | Cloudy | 52°11° (likely 52°11° to 57°14°) | 52°11° | 0% | 1 mph2 km/h from SSE, gusts 11 mph17 km/h | 83% | 83% | 0 |
| Mon 4a | Cloudy | 51°11° (likely 51°11° to 57°14°) | 51°11° | 0% | 1 mph2 km/h from S, gusts 10 mph17 km/h | 87% | 89% | 0 |
| Mon 5a | Cloudy | 51°11° (likely 51°11° to 56°13°) | 51°11° | 0% | 1 mph2 km/h from S, gusts 11 mph17 km/h | 87% | 92% | 0 |
| Mon 6a | Cloudy | 50°10° (likely 50°10° to 55°13°) | 50°10° | 0% | 1 mph2 km/h from S, gusts 10 mph16 km/h | 90% | 92% | 0 |
| Mon 7a | Cloudy | 49°9° (likely 49°9° to 54°12°) | 49°9° | 0% | 1 mph2 km/h from S, gusts 10 mph16 km/h | 92% | 92% | 0 |
| Mon 8a | Cloudy | 50°10° (likely 50°10° to 55°13°) | 50°10° | 0% | 1 mph2 km/h from S, gusts 9 mph15 km/h | 93% | 91% | 0 |
| Mon 9a | Cloudy | 56°13° (likely 56°13° to 60°16°) | 56°13° | 0% | 1 mph2 km/h from S, gusts 9 mph15 km/h | 80% | 81% | 1 |
| Mon 10a | Cloudy | 64°18° (likely 63°17° to 67°19°) | 64°18° | 0% | 1 mph2 km/h from SSW, gusts 11 mph18 km/h | 65% | 80% | 2 |
| Mon 11a | Cloudy | 69°21° (likely 67°19° to 71°22°) | 69°21° | 0% | 1 mph2 km/h from SSW, gusts 10 mph16 km/h | 54% | 82% | 3 |
| Mon 12p | Cloudy | 73°23° (likely 70°21° to 75°24°) | 73°23° | 0% | 2 mph3 km/h from SSW, gusts 8 mph13 km/h | 45% | 83% | 4 |
| Mon 1p | Cloudy | 75°24° (likely 73°23° to 77°25°) | 75°24° | 0% | 2 mph3 km/h from SSW, gusts 8 mph13 km/h | 41% | 81% | 4 |
| Mon 2p | Mostly cloudy | 77°25° (likely 73°23° to 77°25°) | 77°25° | 0% | 2 mph3 km/h from SSW, gusts 8 mph13 km/h | 37% | 61% | 3 |
| Mon 3p | Partly sunny | 78°26° (likely 73°23° to 78°26°) | 78°26° | 0% | 2 mph3 km/h from SSW, gusts 8 mph12 km/h | 35% | 53% | 3 |
Days ahead
Tap a day for its hours and the official wording.
Today, Oct 24. Partly sunny. High 75°24°, low 48°9°. Dry. Forecasts agree.
Afternoon
noon–6 PM
Sunny, 75°24°Dry
Evening
6 PM–midnight
Clear, 59°15°Dry
Overnight
midnight–6 AM
Partly cloudy, 49°9°Dry
Official NWS forecast
Today: Mostly sunny, with a high near 75. South southeast wind around 5 mph.
Tonight: Mostly clear, with a low around 48. Southeast wind around 3 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 73°23°–75°24°
- Low, likely
- 46°8°–48°9°
- Wind
- 9 mph14 km/h, gusts 17 mph27 km/h
- UV peak
- 4
Tomorrow, Oct 25. Cloudy. High 77°25°, low 49°9°. Dry. Mostly agree.
Morning
6 AM–noon
Cloudy, 49°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 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 74°23°–79°26°
- Low, likely
- 48°9°–50°10°
- Wind
- 7 mph12 km/h, gusts 15 mph24 km/h
- UV peak
- 4
Monday, Oct 26. Partly sunny. High 78°26°, low 50°10°. Dry. Mostly agree.
Morning
6 AM–noon
Cloudy, 50°10°Dry
Afternoon
noon–6 PM
Partly sunny, 78°26°Dry
Evening
6 PM–midnight
Partly cloudy, 63°17°Dry
Overnight
midnight–6 AM
Cloudy, 55°13°Dry
Official NWS forecast
Day: Mostly sunny, with a high near 78. South southwest wind around 2 mph.
Night: Partly cloudy, with a low around 50. South wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 74°23°–78°26°
- Low, likely
- 50°10°–54°12°
- Wind
- 8 mph13 km/h, gusts 17 mph27 km/h
- UV peak
- 4
Tuesday, Oct 27. Cloudy. High 76°24°, low 52°11°. Dry. Mostly agree.
Morning
6 AM–noon
Cloudy, 54°12°Dry
Afternoon
noon–6 PM
Cloudy, 72°22°Dry
Evening
6 PM–midnight
Cloudy, 63°17°Dry
Overnight
midnight–6 AM
Mostly clear, 56°13°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 76. South wind 2 to 6 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
- 51°11°–56°13°
- Wind
- 10 mph17 km/h, gusts 20 mph32 km/h
- UV peak
- 3
Wednesday, Oct 28. Partly sunny. High 80°27°, low 54°12°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 57°14°Dry
Afternoon
noon–6 PM
Sunny, 76°24°Dry
Evening
6 PM–midnight
Clear, 65°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 80.
Night: Mostly clear, with a low around 54.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 74°23°–80°27°
- Low, likely
- 52°11°–56°13°
- Wind
- 13 mph20 km/h, gusts 22 mph36 km/h
- UV peak
- 3
Thursday, Oct 29. Mostly sunny. High 81°27°, low 55°13°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 59°15°Dry
Afternoon
noon–6 PM
Mostly sunny, 79°26°Dry
Evening
6 PM–midnight
Clear, 68°20°Dry
Overnight
midnight–6 AM
Partly cloudy, 59°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
- 77°25°–81°27°
- Low, likely
- 55°13°–58°14°
- Wind
- 13 mph22 km/h, gusts 27 mph44 km/h
- UV peak
- 4
Friday, Oct 30. Cloudy. High 81°27°, low 57°14°. Dry. Forecasts differ.
Morning
6 AM–noon
Cloudy, 60°16°Dry
Afternoon
noon–6 PM
Cloudy, 78°26°Dry
Evening
6 PM–midnight
Cloudy, 68°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 81.
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°–61°16°
- Wind
- 13 mph22 km/h, gusts 25 mph40 km/h
- UV peak
- 3
Saturday, Oct 31. Drizzle. High 71°22°, low 59°15°. Rain 0.11 in2.8 mm, 50% chance. Forecasts differ.
Morning
6 AM–noon
Cloudy, 60°16°30% chance
Afternoon
noon–6 PM
Cloudy, 73°23°40% chance
Evening
6 PM–midnight
Drizzle, 64°18°50% chance · 0.08 in2.1 mm
Overnight
midnight–6 AM
Drizzle, 62°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.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 66°19°–75°24°
- Low, likely
- 57°14°–61°16°
- Wind
- 20 mph33 km/h
- UV peak
- 2
Sunday, Nov 1. Drizzle. High 72°22°, low 60°16°. Rain 0.58 in15 mm, 50% chance. Mostly agree.
Morning
6 AM–noon
Drizzle, 64°18°50% chance · 0.03 in0.9 mm
Afternoon
noon–6 PM
Drizzle, 72°22°30% chance · 0.05 in1.2 mm
Evening
6 PM–midnight
Drizzle, 64°18°30% chance · 0.4 in10 mm
Overnight
midnight–6 AM
Drizzle, 50°10°40% chance · 0.09 in2.3 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
- 70°21°–75°24°
- Low, likely
- 56°13°–62°17°
- Wind
- 19 mph31 km/h, gusts 45 mph73 km/h
- UV peak
- 3
Monday, Nov 2. Drizzle. High 65°18°, low 50°10°. Rain 0.38 in9.7 mm, 40% chance. Forecasts differ.
Morning
6 AM–noon
Drizzle, 52°11°30% chance · 0.04 in1 mm
Afternoon
noon–6 PM
Drizzle, 56°13°40% chance · 0.16 in4.1 mm
Evening
6 PM–midnight
Drizzle, 53°12°40% chance · 0.04 in1.1 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 differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 53°12°–77°25°
- Low, likely
- 37°3°–65°18°
- Wind
- 23 mph37 km/h, gusts 38 mph62 km/h
The outlook
Today
Dry, high 75°, low 48°.
Tomorrow
Dry, high 77°, low 49°.
Monday
Dry, high 78°, low 50°.
Rest of week
Highs 65–81°; chance of precipitation on Saturday, Sunday.
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
South Fork Sangamon River below Rochester - AUX
18 mi- Level
- 4.4 ft
Reading from Sat 3:30 PM · NWS gauge page
Sugar Creek (W-Central IL) near Springfield
19 mi- Level
- 9.8 ft
- Flow
- 12 cfs
Reading from Sat 3:30 PM · NWS gauge page
Spring Creek (IL) at Springfield
19 mi- Level
- 1.3 ft
- Flow
- under 1 cfs
Reading from Sat 2:30 PM · NWS gauge page
Sun & moon
Sun
Sunrise 7:18 AM, sunset 6:07 PM.
- Daylight
- 10 h 48 min
- Losing 2 min 30 s a day; shortest Dec 21, 1 h 26 min less
- Golden hour
- 5:29–6:24 PM
- Morning 7:01–7:55 AM
- Blue hour
- 6:24–6:34 PM
- Morning 6:51–7:01 AM; first light 6:51 AM
Stars tonight? Fair
Mostly clear 6:34 PM–12 AM, but the moon is 99% lit and up.
Moon
Waxing gibbous
98% lit · growing
- Today
- sets 5:33 AM · rises 5:04 PM
- Full moon
- Oct 25
- New moon
- Nov 9
