South Grafton, MA Weather Tomorrow

Use tomorrow's South Grafton weather forecast and the next 5 day outlook to track precipitation chances, day and night conditions, high and low temperatures in Fahrenheit and Celsius, sunrise, sunset, sky conditions, wind chill, and wind speed with direction for the South Grafton area.
Updated: Mon Sep 21st 2026 5:00 AM EDT
South Grafton, MA Weather – 9-21 – Overcast
65° / 51°
Overcast
In South Grafton, cloud-filled skies are likely with a high near 65°F and a low around 51°F. Rainfall predicted to have a 60% chance with an estimated 0.03in. Wind will be moderate, blowing around 11mph on average and gusts of 26mph at 9 AM. The humidity will be on the higher side, averaging about 79%, the maximum being 98% at 6 AM and 47% being its lowest at 3 PM. Barometric pressure is its highest of 30.23inHg at 11 PM, a lowest point of 30.04inHg at 6 AM with an avg 30.13inHg.
South Grafton, MA Weather – 9-22 – Overcast
54° / 48°

Weather Tomorrow

Overcast
In South Grafton, skies will be overcast with highs near 54°F and lows around 48°F. There might be light rainfall having a 19% chance. Wind will be moderate, blowing around 12mph on average and gusts of 25.1mph at 8 PM. The humidity will be on the higher side, averaging about 71%, the maximum being 89% at 1 AM and 59% being its lowest at 4 PM. Barometric pressure is its highest of 30.4inHg at 9 PM, a lowest point of 30.24inHg at 12 AM with an avg 30.33inHg.
South Grafton, MA Weather – 9-23 – Scattered Showers
55° / 51°
Scattered Showers
Daytime highs will reach 55°F with lows dropping to 51°F in South Grafton, where on and off showers are set to occur. Rainfall predicted to have a 61% chance with an estimated 0.03in. Wind will be moderate, blowing around 15mph on average and gusts of 28.7mph at 12 PM. The humidity will be on the higher side, averaging about 78%, the maximum being 88% at 8 PM and 68% being its lowest at 1 AM. Barometric pressure is its highest of 30.43inHg at 12 PM, a lowest point of 30.39inHg at 12 AM with an avg 30.4inHg.
South Grafton, MA Weather – 9-24 – Overcast
54° / 48°
Overcast
It will be overcast in South Grafton, with a high of 54°F and a low of 48°F. The chance of rain is 88% with an estimated 0.45in. Wind will be moderate, blowing around 17mph on average and gusts of 38.1mph at 11 PM. High humidity with average of 81% is anticipated, the maximum being 96% at 4 PM and 68% being its lowest at 1 AM. Barometric pressure is its highest of 30.37inHg at 12 AM, a lowest point of 30.19inHg at 11 PM with an avg 30.3inHg.
South Grafton, MA Weather – 9-25 – Light Rain Shower
60° / 47°
Light Rain Shower
In South Grafton, it will rain at times with highs near 60°F and lows around 47°F. The chance of rain is 87% with an estimated 0.28in. Wind will be moderate, blowing around 17mph on average and gusts of 40.5mph at 5 AM. High humidity with average of 84% is anticipated, the maximum being 98% at 4 PM and 53% being its lowest at 1 PM. Barometric pressure is its highest of 30.3inHg at 12 AM, a lowest point of 30.01inHg at 11 PM with an avg 30.13inHg.
South Grafton, MA Weather – 9-26 – Light Rain Shower
53° / 48°
Light Rain Shower
South Grafton may see rain showers, with daytime highs of 53°F and overnight lows near 48°F. The chance of rain is 93% with an estimated 1in. Wind will be moderate, blowing around 17mph on average and gusts of 41.2mph at 5 PM. High humidity with average of 94% is anticipated, the maximum being 98% at 5 AM and 67% being its lowest at 11 PM. Barometric pressure is its highest of 30.06inHg at 11 PM, a lowest point of 29.9inHg at 8 AM with an avg 29.95inHg.

5 Day Forecast Nearby

More Local Information

Bookmark and Share

Get the LocalConditions.com App on Google Play
Sign up for a membership to go Ad free