Helena's weather outlook for today, reported at 5:15 AM on Monday, the 13th of May. Today, mostly sunny, with a high near 77. West northwest wind 5 to 15 mph, with gusts as high as 21 mph. And then, Tonight, partly cloudy, with a low around 49. Winds could gust as high as 18 mph. Tuesday, a 20 percent chance of showers and thunderstorms after noon. Sunny through mid morning, then becoming mostly cloudy, with a high near 77. Then, Tuesday Night, mostly cloudy, with a low around 51. Sunrise today will be at 5:56 am and the sun will set at 8:53 pm. Stay tuned for weather updates since the weather's always changing.