This graph shows two measures of lumber prices: 1) Framing Lumber from Random Lengths through Jan 24, 2020 (via NAHB), and 2) CME framing futures.
Right now Random Lengths prices are up 14% from a year ago, and CME futures are up 12% year-over-year.
There is a seasonal pattern for lumber prices, and usually prices will increase in the Spring, and peak around May, and then bottom around October or November - although there is quite a bit of seasonal variability.
The trade war was a factor in the sharp decline with reports that lumber exports to China had declined by 40%. Now, with a pickup in housing, lumber prices are moving up again.