Abnormally high temperatures will impact the Northern Rockies on Saturday. Forecasted highs for the valleys of north central Idaho and western Montana range from the low 90s to low 100s (lower valleys of north-central Idaho). If you are planning to spend time outside, remember to drink plenty of water, take frequent breaks, and avoid strenuous activity during the afternoon. While the temperatures may be hot, streams and rivers are still running cold and swift, posing the risk of hypothermia. Muddy waters may obscure underwater hazards, so remember to practice cold water safety.