Yes

you do need a jacket based on the weather in Montfoort, Netherlands 51 seconds ago

Why? Because it's so windy, your hat is now someone else's problem, two cities away!
70°F21°C & Windy

Wind is 15 mph24 km/h from the Southwest, gusting to 27 mph43 km/h
September 18
12pm70°F21°C14 mph23 km/h SouthwestPartly Cloudy
1pm69°F20°C13 mph21 km/h SouthwestPartly Cloudy
2pm67°F19°C11 mph18 km/h SouthwestPartly Cloudy
3pm66°F19°C11 mph17 km/h SouthwestMostly Clear
4pm64°F18°C10 mph16 km/h SouthwestMostly Clear
5pm63°F17°C9 mph15 km/h SouthwestMostly Clear
6pm62°F17°C9 mph15 km/h SouthwestMostly Clear
7pm62°F16°C9 mph15 km/h SouthwestPartly Cloudy
8pm61°F16°C8 mph14 km/h SouthwestMostly Clear
9pm60°F16°C8 mph12 km/h SouthwestMostly Clear
10pm59°F15°C7 mph12 km/h SouthwestPartly Cloudy
11pm59°F15°C7 mph12 km/h SouthwestPartly Cloudy
DateLowHighWindDayNight
September 1762°F17°C70°F21°C11 mph17 km/h from SouthwestDrizzlePartly Cloudy
September 1858°F14°C78°F26°C8 mph12 km/h from SouthPartly CloudyMostly Cloudy
September 1962°F17°C79°F26°C10 mph16 km/h from SouthRainRain
September 2053°F12°C65°F18°C14 mph22 km/h from SouthwestCloudyDrizzle
September 2149°F9°C61°F16°C9 mph14 km/h from NorthDrizzleMostly Clear
September 2245°F7°C61°F16°C7 mph12 km/h from NorthPartly CloudyPartly Cloudy
September 2347°F8°C60°F16°C10 mph16 km/h from NortheastPartly CloudyPartly Cloudy

Yes

Low of 58°F15°C, High of 78°F26°C
Wind: 8 mph12 km/h
Precipitation: None

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