When checking the wind speed/direction what does the +## at the end mean?

Question

Example: 2510+07

Answer 1

Wind blowing from 250 degrees (true) at 7 knots, temp is +7 degrees C
when looking at Aviation winds aloft forecasts (FD) remember,

Winds aloft are computer prepared and contain forecast wind direction and speed as well as forecast temperatures. The standard FD levels are as follows:
Low Level

* 3,000 feet
* 6,000 feet
* 9,000 feet
* 12,000 feet
* 18,000 feet
* 24,000 feet
* 30,000 feet
* 34,000 feet
* 39,000 feet

High Level

* 45,000 feet
* 53,000 feet

All levels through 12,000 feet are true altitude (MSL). The levels 18,000 feet and above are pressure altitude. Wind direction is from true north. No winds are forecast within 1,500 feet of station elevation. Also, no temperatures are forecast for the 3,000 foot level or for any level within 2,500 feet of station elevation. Temperature is in whole degrees Celsius and assumed to be negative above 24,000 feet.

Answer 2

wind from 250 degrees, temperature +7 degrees Celsius. the + is omitted above FL 240 as the + is always negative at that altitude

Answer 3

If its on the winds and temperatures aloft forecast, its the temperature (in this case 7 degrees celsius).

Answer 4

temperature at speed in celcius