5-day weather forecast for Gillespie, Illinois
Today
62°
75°
Chance Thunderstorms
Thursday
55°
70°
Partly Sunny
Friday
48°
72°
Slight Chance Thunderstorms
Saturday
51°
73°
Chance Thunderstorms
Sunday
59°
76°
Chance Thunderstorms
Click on a forecast to see the forecast trend for that day
Weather changeability for Grafton, Illinois
| Temperature | Last Month | Last Year |
|---|---|---|
| Average change in high temperature day-to-day | 8.3° | 6.6° |
| Average change in low temperature day-to-day | 8.4° | 7.1° |
| Precipitation | Last Month | Last Year |
|---|---|---|
| Chance of dry day after a precip day | 45% | 52% |
| Chance of precip day after a dry day | 31% | 26% |
Weather forecast accuracy for Grafton, Illinois
| AccuWeather | 75.30% |
| The Weather Channel | 75.00% |
| Intellicast | 75.00% |
| Weather Underground | 74.40% |
| National Weather Service | 74.11% |
| CustomWeather | 71.13% |
| NWS Digital Forecast | 70.83% |
| World Weather Online | 51.79% |
| Persistence | 31.79% |
| Intellicast | 68.26% |
| The Weather Channel | 68.24% |
| National Weather Service | 66.81% |
| NWS Digital Forecast | 65.82% |
| AccuWeather | 64.62% |
| CustomWeather | 64.61% |
| Persistence | 44.44% |
ForecastAdvisor Fact
It rained or snowed 74% of the time in Grafton last month when CustomWeather's text forecasts called for precipitation, and 18% of the time when they did not.