Current Conditions

Washington, Illinois

84°F29°C
Partly Cloudy

Wind

SSE 7 mph12 km/h

Humidity

51%

Cloud Cover

41%

As of Tuesday, September 8, 2026 at 6:06 PM CDT

Today's Outlook

Night

Partly cloudy, with a low around 79°F26°C. Breezy from the S at 9 to 10 mph14 to 15 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
Partly CloudyHigh 88°F31°CLow 79°F26°CPrecip 0 in0 mmCloud 51%Wind S 8 mph13 km/hTuesday: Mostly cloudy and hot, with a high of 88°F31°C. Breezy from the SSE at 8 to 9 mph13 to 15 km/h. Tuesday Night: Partly cloudy, with a low around 79°F26°C. Breezy from the S at 9 to 10 mph14 to 15 km/h.
DrizzleHigh 82°F28°CFeels 86°F30°CLow 73°F23°CPrecip 0.07 in1.7 mm40%Cloud 74%Wind SW 6 mph10 km/hWednesday: Overcast and warm, with a high of 82°F28°C and morning low of 73°F23°C. Breezy from the WSW at 6 to 7 mph9 to 11 km/h. 40% chance of drizzle throughout the day. Humid. Wednesday Night: Mostly cloudy, with a low around 73°F23°C. Breezy from the SW at 6 to 10 mph10 to 15 km/h. 19% chance of drizzle in the evening.
RainHigh 79°F26°CLow 67°F19°CPrecip 0.4 in10.2 mm75%Cloud 84%Wind NW 4 mph6 km/hThursday: Overcast and warm, with a high of 79°F26°C and morning low of 70°F21°C. Light wind from the NNW around 4 mph6 km/h. 75% chance of rain throughout the day. Humid. Thursday Night: Mostly cloudy, with a low around 67°F19°C. Light wind from the W around 4 mph6 km/h. 61% chance of light rain overnight.
ClearHigh 83°F28°CLow 61°F16°CPrecip 0 in0.1 mm6%Cloud 32%Wind SE 5 mph9 km/hFriday: Partly cloudy and warm, with a high of 83°F28°C and morning low of 61°F16°C. Light wind from the SE around 6 mph9 km/h. Friday Night: Mostly clear, with a low around 62°F17°C. Light wind from the ESE around 5 mph8 km/h.
DrizzleHigh 86°F30°CFeels 89°F32°CLow 67°F19°CPrecip 0.03 in0.7 mm13%Cloud 41%Wind SW 7 mph11 km/hSaturday: Mostly cloudy and warm, with a high of 86°F30°C and morning low of 67°F19°C. Breezy from the SW at 7 to 8 mph12 to 14 km/h. 13% chance of drizzle around midday. Humid. Saturday Night: Mostly clear, with a low around 67°F20°C. Light wind from the SSW around 6 mph10 km/h.
ClearHigh 79°F26°CLow 63°F17°CPrecip 0.04 in0.9 mm9%Cloud 37%Wind N 7 mph11 km/hSunday: Partly cloudy and warm, with a high of 79°F26°C and morning low of 63°F17°C. Breezy from the N at 7 mph11 km/h. Sunday Night: Partly cloudy, with a low around 66°F19°C. Light wind from the N around 6 mph10 km/h.
ShowersHigh 84°F29°CLow 61°F16°CPrecip 0.1 in2.6 mm19%Cloud 48%Wind SE 10 mph16 km/hMonday: Mostly cloudy and warm, with a high of 84°F29°C and morning low of 61°F16°C. Breezy from the SSE at 10 to 12 mph16 to 19 km/h. 19% chance of showers in the morning. Monday Night: Partly cloudy, with a low around 62°F17°C. Breezy from the SE at 9 to 12 mph15 to 20 km/h. 16% chance of showers throughout the night.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
TuesdaySep 888°F31°C79°F26°C0 in0 mm· —51%Partly CloudyS 8 mph13 km/h
WednesdaySep 982°F28°C
Feels 86°F30°C
73°F23°C0.07 in1.7 mm· 40%74%DrizzleSW 6 mph10 km/h
ThursdaySep 1079°F26°C67°F19°C0.4 in10.2 mm· 75%84%RainNW 4 mph6 km/h
FridaySep 1183°F28°C61°F16°C0 in0.1 mm· 6%32%ClearSE 5 mph9 km/h
SaturdaySep 1286°F30°C
Feels 89°F32°C
67°F19°C0.03 in0.7 mm· 13%41%DrizzleSW 7 mph11 km/h
SundaySep 1379°F26°C63°F17°C0.04 in0.9 mm· 9%37%ClearN 7 mph11 km/h
MondaySep 1484°F29°C61°F16°C0.1 in2.6 mm· 19%48%ShowersSE 10 mph16 km/h
TuesdaySep 1584°F29°C71°F22°C0.12 in3 mm· 27%59%ShowersSSW 10 mph16 km/h
WednesdaySep 1682°F28°C66°F19°C0.18 in4.5 mm· 36%62%ShowersE 7 mph11 km/h
ThursdaySep 1785°F29°C70°F21°C0.21 in5.4 mm· 26%46%ShowersS 9 mph15 km/h
FridaySep 1880°F27°C66°F19°C0.11 in2.8 mm· 18%42%ShowersWSW 9 mph14 km/h
SaturdaySep 1976°F24°C61°F16°C0.18 in4.5 mm· 20%52%ShowersNW 8 mph12 km/h
SundaySep 2071°F22°C57°F14°C0.16 in4.1 mm· 20%55%ShowersN 8 mph12 km/h
MondaySep 2171°F22°C53°F12°C0.08 in2.1 mm· 12%47%DrizzleNE 8 mph12 km/h
TuesdaySep 2273°F23°C53°F12°C0.07 in1.9 mm· 11%48%DrizzleE 7 mph12 km/h

Nearby Cities

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

PatternExampleDescription
/weather/{country}/{city}//weather/united-states/san-francisco/City forecast (canonical URL)
/weather/{city}//weather/tokyo/Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}//weather/united-states/california/san-francisco/With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}/weather/nearby?lat=48.1&lon=11.5Find nearest city by coordinates
/weather/{country}//weather/germany/Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 40.7037°N, 89.4073°W·Elevation: 232m·Timezone: America/Chicago·Population: 16,664