Yes

you do need a jacket based on the weather in Amherst (Amherst Center), Massachusetts, United States 1 second ago

Why? Because there's a thunderstorm or two nearby!
68°F20°C & Isolated Thunderstorms

Wind is 4 mph6 km/h from the Northwest, gusting to 6 mph9 km/h
June 6
6am68°F20°C4 mph7 km/h NorthwestMostly Cloudy
7am70°F21°C5 mph8 km/h NorthCloudy
8am72°F22°C3 mph5 km/h NorthMostly Cloudy
9am75°F24°C3 mph4 km/h NortheastPartly Cloudy
10am78°F25°C2 mph3 km/h EastCloudy
11am80°F27°C2 mph3 km/h SoutheastMostly Cloudy
12pm82°F28°C1 mph2 km/h SouthPartly Cloudy
1pm81°F27°C2 mph4 km/h SouthPartly Cloudy
2pm80°F27°C3 mph5 km/h SouthMostly Cloudy
3pm79°F26°C3 mph6 km/h SouthCloudy
4pm77°F25°C3 mph5 km/h SouthwestThunderstorms
5pm74°F23°C5 mph7 km/h NortheastThunderstorms
DateLowHighWindDayNight
June 665°F18°C82°F28°C3 mph5 km/h from NorthThunderstormsDrizzle
June 761°F16°C71°F22°C4 mph7 km/h from WestRainPartly Cloudy
June 856°F14°C75°F24°C5 mph8 km/h from EastMostly CloudyRain
June 957°F14°C71°F21°C6 mph10 km/h from EastDrizzleDrizzle
June 1057°F14°C70°F21°C5 mph8 km/h from SouthThunderstormsThunderstorms
June 1159°F15°C76°F24°C8 mph13 km/h from WestPartly CloudyClear
June 1258°F14°C78°F25°C9 mph15 km/h from WestMostly ClearMostly Clear

No

Low of 61°F16°C, High of 72°F22°C
Wind: 4 mph7 km/h
Precipitation: 73% rain

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