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Lowell, WA Weather Tomorrow

Tomorrow's weather forecast for Lowell is supported by a complete 5 day outlook covering precipitation potential, daytime and nighttime forecasts, temperature highs and lows in Fahrenheit and Celsius, sunrise and sunset times, cloud cover, wind chill, wind speed, and wind direction for the Lowell area and around Snohomish county, Washington.
Updated: Mon Sep 21st 2026 11:00 AM PDT
Lowell, WA Weather – 9-21 – Mist
70° / 49°
Mist
Highs will reach 70°F with lows near 49°F in Lowell, where mist is. There might be light rainfall having a 12% chance. Winds will be light at 5mph and gusts of 15.9mph at 4 PM. The humidity will be on the higher side, averaging about 77%, the maximum being 89% at 10 PM and 47% being its lowest at 2 PM. Barometric pressure is its highest of 30inHg at 11 PM, a lowest point of 29.95inHg at 6 PM with an avg 29.97inHg.
Lowell, WA Weather – 9-22 – Overcast
64° / 49°

Weather Tomorrow

Overcast
It will be overcast in Lowell, with a high of 64°F and a low of 49°F. There's a moderate 26% chance of rainfall with an estimated 0in. Winds will be light at 5mph and gusts of 13.4mph at 7 AM. High humidity with average of 83% is anticipated, the maximum being 96% at 11 PM and 63% being its lowest at 5 PM. Barometric pressure is its highest of 30.06inHg at 11 PM, a lowest point of 30inHg at 6 PM with an avg 30.03inHg.
Lowell, WA Weather – 9-23 – Overcast
68° / 48°
Overcast
Overcast is in the forecast for Lowell, with a high of 68°F and a low of 48°F. There might be light rainfall having a 16% chance. Winds will be light at 5mph and gusts of 14.1mph at 6 AM. The humidity will be on the higher side, averaging about 74%, the maximum being 97% at 5 AM and 38% being its lowest at 3 PM. Barometric pressure is its highest of 30.08inHg at 7 AM, a lowest point of 30.01inHg at 6 PM with an avg 30.05inHg.
Lowell, WA Weather – 9-24 – Overcast
56° / 48°
Overcast
Daytime highs will reach 56°F with lows dropping to 48°F in Lowell, where it will be overcast. The chance of rain is 91% with an estimated 0.57in. Winds will be light at 5mph and gusts of 14.5mph at 11 AM. High humidity with average of 89% is anticipated, the maximum being 100% at 8 PM and 66% being its lowest at 10 AM. Barometric pressure is its highest of 30.03inHg at 12 AM, a lowest point of 29.86inHg at 7 PM with an avg 29.92inHg.
Lowell, WA Weather – 9-25 – Light Rain
55° / 44°
Light Rain
In Lowell, rain showers are likely with a high near 55°F and a low around 44°F. The chance of rain is 90% with an estimated 0.59in. Winds will be light at 9mph and gusts of 22.6mph at 4 AM. High humidity with average of 92% is anticipated, the maximum being 99% at 12 AM and 81% being its lowest at 2 PM. Barometric pressure is its highest of 30.1inHg at 11 PM, a lowest point of 29.89inHg at 1 AM with an avg 30.01inHg.
Lowell, WA Weather – 9-26 – Mist
61° / 44°
Mist
Lowell could see mist with daytime highs of 61°F and nighttime lows near 44°F. Rainfall predicted to have a 73% chance with an estimated 0.13in. Winds will be light at 6mph and gusts of 16.8mph at 5 PM. High humidity with average of 81% is anticipated, the maximum being 95% at 2 AM and 50% being its lowest at 5 PM. Barometric pressure is its highest of 30.22inHg at 11 PM, a lowest point of 30.11inHg at 12 AM with an avg 30.17inHg.

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