Yes
you do need a jacket based on the weather in Waterloo, ON, Canada 1 second ago
Why? Because it's not very warm out.
55°F13°C & Cloudy
Wind is 3 mph5 km/h from the E, gusting to 6 mph9 km/h
| May 17 | ||||
| 7am | 55°F13°C | 3 mph5 km/h E | Cloudy | |
| 8am | 57°F14°C | 3 mph5 km/h SE | Cloudy | |
| 9am | 60°F15°C | 3 mph5 km/h SE | Cloudy | |
| 10am | 62°F17°C | 3 mph4 km/h S | Cloudy | |
| 11am | 65°F18°C | 3 mph4 km/h SW | Cloudy | |
| 12pm | 65°F19°C | 4 mph6 km/h S | Cloudy | |
| 1pm | 65°F19°C | 5 mph8 km/h SE | Drizzle | |
| 2pm | 66°F19°C | 5 mph9 km/h SE | Drizzle | |
| 3pm | 66°F19°C | 7 mph12 km/h SE | Drizzle | |
| 4pm | 67°F20°C | 9 mph14 km/h SE | Cloudy | |
| 5pm | 68°F20°C | 7 mph12 km/h SE | Mostly Cloudy | |
| 6pm | 66°F19°C | 7 mph11 km/h SE | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| May 17 | 53°F12°C | 68°F20°C | 5 mph8 km/h from SE | Rain | Mostly Cloudy |
| May 18 | 55°F13°C | 75°F24°C | 5 mph8 km/h from E | Mostly Cloudy | Mostly Clear |
| May 19 | 53°F12°C | 81°F27°C | 4 mph6 km/h from SW | Mostly Clear | Mostly Clear |
| May 20 | 58°F14°C | 82°F28°C | 7 mph11 km/h from S | Partly Cloudy | Partly Cloudy |
| May 21 | 61°F16°C | 82°F28°C | 11 mph18 km/h from SW | Partly Cloudy | Mostly Cloudy |
| May 22 | 56°F13°C | 74°F23°C | 14 mph23 km/h from SW | Drizzle | Thunderstorms |
| May 23 | 49°F9°C | 64°F18°C | 14 mph22 km/h from W | Mostly Cloudy | Mostly Cloudy |
Yes
Low of 55°F13°C, High of 75°F24°CWind: 5 mph8 km/h
Precipitation: 9% rain