Weather forecast accuracy details for Joppa, Illinois

These are the one- to three-day out accuracy percentages for high temperature, low temperature, icon forecast precipitation (both rain and snow), and text forecast precipitation (both rain and snow). Temperature accuracy is the percentage of forecasts within three degrees. Precipitation accuracy is the percentage of correct forecasts. The forecasts are collected in the evening.

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Weather Forecast Accuracy Data Last Month (March)

Provider High Temp Low Temp Icon Precip Text Precip Overall
Microsoft   91.36% 73.49% 92.86% 92.86% 87.64%
The Weather Channel   79.31% 73.86% 88.51% 88.51% 82.55%
AerisWeather   79.31% 62.50% 88.51% 88.51% 79.71%
Weatherbit   72.09% 65.52% 89.66% 89.66% 79.23%
Foreca/Vaisala   75.86% 63.64% 88.51% 88.51% 79.13%
AccuWeather   65.52% 71.59% 89.66% 82.76% 77.38%
NWS Digital Forecast   63.95% 63.22% 73.26% 73.26% 68.42%
Pirate Weather   62.07% 22.73% 90.80% 86.21% 65.45%
Open-Meteo   43.68% 50.00% 82.76% 82.76% 64.80%
World Weather Online   41.38% 55.68% 79.31% 79.31% 63.92%
Wetter.com   31.03% 52.27% 80.46% 80.46% 61.06%
OpenWeather   31.03% 19.32% 80.46% 80.46% 52.82%
Persistence   24.59% 19.67% 54.10% 54.10% 38.11%

Weather Forecast Accuracy Data Last Year (2024)

Provider High Temp Low Temp Icon Precip Text Precip Overall
The Weather Channel   84.93% 79.21% 86.24% 86.24% 84.15%
Microsoft   83.50% 77.92% 85.28% 86.64% 83.33%
AccuWeather   80.72% 77.95% 81.96% 82.15% 80.69%
Weatherbit   80.41% 73.94% 83.30% 83.40% 80.26%
Foreca/Vaisala   78.75% 73.78% 83.43% 83.43% 79.85%
AerisWeather   78.46% 74.53% 83.15% 83.15% 79.82%
NWS Digital Forecast   80.47% 73.58% 81.98% 81.98% 79.50%
Pirate Weather   72.30% 40.47% 83.66% 83.66% 70.02%
Open-Meteo   55.81% 54.12% 81.46% 81.46% 68.21%
World Weather Online   48.50% 53.65% 79.03% 79.03% 65.05%
OpenWeather   50.66% 43.26% 82.87% 82.87% 64.91%
Wetter.com   43.63% 54.78% 76.50% 75.75% 62.66%
Persistence   35.99% 27.64% 60.35% 60.35% 46.09%

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The data here is calculated from forecasts and observations collected and analyzed by ForecastWatch. If you would like more information about the methods, scientific approach, and the quality controls employed to ensure the data and analyses are of the highest quality, please read this overview.

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