Yes
you do need a jacket based on the weather in Fort Collins (Lake Street Homes), Colorado, United States 1 second ago
Why? Because it's not very warm out.
54°F12°C & Mostly Cloudy
Wind is 3 mph5 km/h from the W, gusting to 5 mph8 km/h
| September 20 | ||||
| 10am | 56°F13°C | 3 mph6 km/h W | Mostly Clear | |
| 11am | 62°F17°C | 2 mph3 km/h SW | Partly Cloudy | |
| 12pm | 69°F20°C | 3 mph5 km/h SE | Partly Cloudy | |
| 1pm | 74°F23°C | 6 mph10 km/h SE | Partly Cloudy | |
| 2pm | 78°F25°C | 10 mph15 km/h SE | Partly Cloudy | |
| 3pm | 81°F27°C | 11 mph18 km/h SE | Mostly Clear | |
| 4pm | 83°F28°C | 13 mph20 km/h SE | Mostly Clear | |
| 5pm | 84°F29°C | 13 mph20 km/h SE | Clear | |
| 6pm | 85°F30°C | 12 mph20 km/h SE | Clear | |
| 7pm | 84°F29°C | 11 mph18 km/h SE | Clear | |
| 8pm | 82°F28°C | 9 mph14 km/h SE | Clear | |
| 9pm | 77°F25°C | 6 mph9 km/h SE | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 20 | 50°F10°C | 85°F30°C | 8 mph13 km/h from SE | Mostly Clear | Clear |
| September 21 | 52°F11°C | 71°F21°C | 10 mph17 km/h from NE | Partly Cloudy | Rain |
| September 22 | 43°F6°C | 59°F15°C | 6 mph10 km/h from SE | Rain | Mostly Clear |
| September 23 | 42°F6°C | 75°F24°C | 4 mph7 km/h from SW | Partly Cloudy | Mostly Cloudy |
| September 24 | 46°F8°C | 71°F22°C | 5 mph8 km/h from SE | Partly Cloudy | Clear |
| September 25 | 45°F7°C | 75°F24°C | 6 mph9 km/h from SE | Clear | Clear |
| September 26 | 47°F8°C | 79°F26°C | 4 mph7 km/h from SE | Mostly Clear | Clear |
Yes
Low of 52°F11°C, High of 71°F22°CWind: 10 mph17 km/h
Precipitation: 13% rain