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Mackay, ID Weather Tomorrow

Tomorrow's Mackay weather report includes an accurate 5 day forecast with precipitation probability, daily and nightly weather conditions, high and low temperature trends, sunrise and sunset information, sky cover, wind speed, wind direction, and wind chill for the Mackay area and around Custer county, Idaho.
Updated: Tue Oct 27th 2026 6:30 AM MDT
Mackay, ID Weather – 10-27 – Overcast
40° / 17°
Overcast
Mackay may see overcast, with daytime highs of 40°F and overnight lows near 17°F. There's a moderate 36% chance of rainfall with an estimated 0.01in. Snow is likely with a 53% chance with an estimated 0in. Winds will be light at 6mph and gusts of 15.2mph at 7 PM. The humidity will be on the higher side, averaging about 71%, the maximum being 80% at 7 AM and 50% being its lowest at 1 PM. Barometric pressure is its highest of 30.09inHg at 9 AM, a lowest point of 29.84inHg at 5 PM with an avg 29.96inHg.
Mackay, ID Weather – 10-28 – Sunny
43° / 16°

Weather Tomorrow

Sunny
Mackay is set for sunshine with temperatures peaking at 43°F and dipping to 16°F. There's a very small chance of rainfall, only about 5%. Snow is likely with a 18% chance. Winds will be light at 7mph and gusts of 15.9mph at 8 PM. The humidity will be on the higher side, averaging about 65%, the maximum being 82% at 3 AM and 36% being its lowest at 2 PM. Barometric pressure is its highest of 30.1inHg at 10 PM, a lowest point of 29.94inHg at 4 PM with an avg 30.03inHg.
Mackay, ID Weather – 10-29 – Sunny
48° / 19°
Sunny
Highs will reach 48°F with lows near 19°F in Mackay, where sunshine is. There's a very small chance of rainfall, only about 5% with an estimated 0in. Snow is likely with a 16% chance. Winds will be light at 9mph and gusts of 17mph at 7 AM. Humidity levels should be comfortable, sitting around 52% on average, the maximum being 75% at 12 AM and 25% being its lowest at 4 PM. Barometric pressure is its highest of 30.11inHg at 8 AM, a lowest point of 29.92inHg at 5 PM with an avg 30.03inHg.
Mackay, ID Weather – 10-30 – Overcast
48° / 26°
Overcast
In Mackay, it will be overcast with highs near 48°F and lows around 26°F. Rainfall predicted to have a 64% chance with an estimated 0.04in. Snow is likely with a 28% chance. Wind will be moderate, blowing around 11mph on average and gusts of 14.3mph at 2 PM. The humidity will be on the higher side, averaging about 78%, the maximum being 95% at 9 PM and 56% being its lowest at 2 PM. Barometric pressure is its highest of 29.97inHg at 11 PM, a lowest point of 29.85inHg at 2 PM with an avg 29.92inHg.
Mackay, ID Weather – 10-31 – Overcast
46° / 24°
Overcast
Mackay is set for cloud-filled skies with temperatures peaking at 46°F and dipping to 24°F. Rainfall predicted to have a 71% chance with an estimated 0.08in. Snow is likely with a 40% chance with an estimated 0in. Winds will be light at 9mph and gusts of 13.6mph at 5 AM. The humidity will be on the higher side, averaging about 77%, the maximum being 94% at 12 AM and 50% being its lowest at 4 PM. Barometric pressure is its highest of 30inHg at 4 AM, a lowest point of 29.87inHg at 5 PM with an avg 29.94inHg.
Mackay, ID Weather – 11-1 – Light Snow Showers
30° / 16°
Light Snow Showers
Highs will reach 30°F with lows near 16°F in Mackay, where light Snow Showers are. Rainfall predicted to have a 63% chance with an estimated 0.05in. Snow is likely with a 77% chance with an estimated 0.3in. Winds will be light at 6mph and gusts of 20.6mph at 5 PM. The humidity will be on the higher side, averaging about 78%, the maximum being 95% at 4 AM and 60% being its lowest at 2 PM. Barometric pressure is its highest of 30.34inHg at 11 PM, a lowest point of 29.94inHg at 3 AM with an avg 30.06inHg.

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