Home / Weather / Boston Weather Alert: Rain Today, Deep Freeze Ahead
Boston Weather Alert: Rain Today, Deep Freeze Ahead
20 Sep
Summary
- Boston expects 75% chance of rain with a high of 17°C today.
- A drastic temperature drop follows, with lows near -12°C.
- This week will see persistent cold, averaging around -8°C to -10°C.
Boston is set for a weekend of rain and cooler temperatures, with a significant 75% chance of precipitation expected today, September 20, 2026. The high temperature will only reach 17 degrees Celsius, and overcast skies will persist. Residents are urged to carry umbrellas and consider waterproof footwear due to the damp conditions and intermittent afternoon showers.
Following today's weather, the city will experience a dramatic turn towards severely cold conditions. Starting September 21, 2026, daily highs are predicted to remain below freezing, with lows plunging to -12 degrees Celsius. This Arctic chill is expected to continue throughout the week.
The upcoming forecast indicates persistent cold, with average temperatures hovering between -8°C and -10°C for much of the period. While the chance of rain significantly decreases, some light precipitation may occur on specific dates later in the week. The city will generally experience thick cloud cover and breeziness.
By the end of the forecast period, conditions remain cold, with a possibility of rain and wind on September 26, 2026. The week is expected to conclude with clearer skies around October 1, 2026, but the preceding days will be marked by the ongoing cold snap.
