Weather in Henderson, Illinois
Live weather conditions. Source: Open-Meteo
Updated May 30, 2026 · 02:48 AMET · Refreshes every hour
63°F
Partly cloudy
Feels like 60°F
57%
Humidity
6 mph
Wind Speed
7-Day Forecast
Sat
May 30
☁️
Cloudy
82°
59°
Sun
May 31
☁️
Cloudy
80°
58°
Mon
Jun 1
☁️
Cloudy
80°
58°
Tue
Jun 2
☁️
Cloudy
76°
56°
Wed
Jun 3
☁️
Cloudy
75°
54°
Thu
Jun 4
☁️
Cloudy
78°
56°
Fri
Jun 5
🌧️
Rain
82°
61°
About Weather in Henderson
Henderson is located in Illinois at coordinates 41.023878°N, 90.353581°W. Weather data is sourced from Open-Meteo, a free and open meteorological API that combines data from national weather services including NOAA, the European Centre for Medium-Range Weather Forecasts (ECMWF), and others.
All temperatures are displayed in Fahrenheit. Wind speed is in miles per hour. The 7-day forecast uses the best available global forecast model for Henderson's location. Data is refreshed every hour.
Other Cities in Illinois
Frequently Asked Questions
How accurate is this weather data?▾
Weather data from Open-Meteo achieves approximately ±2°F accuracy for temperature within the first 24 hours. Accuracy decreases with forecast range — 1-3 day forecasts are quite reliable, while 5-7 day forecasts are directionally accurate but less precise. Open-Meteo uses multiple global weather models and selects the best one for each location.
Why are temperatures shown in Fahrenheit?▾
This site is designed primarily for a US audience, so temperatures are shown in Fahrenheit (°F), the standard unit used in the United States. To convert: °C = (°F - 32) × 5/9. For example, 77°F = 25°C, 32°F = 0°C (freezing), 98.6°F = 37°C (body temperature).
What is the climate like in Henderson?▾
Henderson is located in Illinois in the central United States. The current conditions shown reflect real-time weather. For historical climate normals (average temperatures by month), the NOAA Climate Data Online tool provides 30-year climate averages for most US cities.
How often is weather data updated?▾
Current conditions are refreshed every hour. The 7-day forecast uses Open-Meteo's latest model run, which is updated every 6 hours with new data from global weather observations including weather balloons, satellites, and ground stations.