5-day weather forecast for Helena, Montana

Weather changeability for Helena, Montana

Temperature Last Month Last Year
Average change in high temperature day-to-day 9.3° 6.5°
Average change in low temperature day-to-day 6.1° 6.1°
Precipitation Last Month Last Year
Chance of dry day after a precip day 71% 63%
Chance of precip day after a dry day 21% 20%

Weather forecast accuracy for Helena, Montana

Last Month
The Weather Channel   69.62%
MeteoGroup   69.35%
AccuWeather   69.09%
Weather Underground   69.09%
Foreca   62.37%
Dark Sky (forecast.io)   60.75%
NWS Digital Forecast   58.33%
World Weather Online   57.53%
Persistence   43.01%
Last Year
The Weather Channel   74.18%
Weather Underground   73.17%
MeteoGroup   72.15%
Foreca   70.55%
AccuWeather   70.46%
Dark Sky (forecast.io)   61.01%
NWS Digital Forecast   59.03%
World Weather Online   57.05%
Persistence   47.99%

ForecastAdvisor Fact

On average, Persistence's high temperature forecasts for Helena were off by 12.91 degrees last month.