Even though you could, that misses the point — this is about friendly competition, learning, and sharpening your own forecasting. Weather apps aren't always right, and forecasting yourself builds a real feel for how weather behaves over time.
Bonus points are rare — awarded when a prediction is exactly correct. You can earn them on both the low and the high.
See the XP page for how experience points are awarded.
Your bolt total appears on your scorecard, alongside your XP. Bolts are awarded for:
+2 for each prediction submitted
+10 when at least one bonus point is earned on a prediction
+1 at 10 XP · +2 at 25 · +5 at 50 · +10 at 75 · +15 at 100 · +20 at 250 · +35 at 500 · +50 at 1000 XP
Grading runs each day at the configured hour (default 3 AM), in the local time of the current city, and usually finishes within a few minutes.
The site uses OpenWeatherMap, along with each city's coordinates, to record the day's actual high and low.
More cities will be added over time. Cities outside the U.S. depend on data and development availability.