The light rain helped to slow the growth of the Hawkins and Pine Park fines near Enterprise, the Bureau of Land Management said.
The Hawkins Fire was burning over 34,370 acres and was 5 percent contained, while three miles to the west, the Pine Park fire had burned roughly 4,500 acres. Both fires were started by lightning Wednesday night.
The Pine Park Fire originally was burning in an area that had been planned to be burned away, and only on Sunday did firefighters start to battle it.
Fire information officer Maggie Dowd said safety for firefighters, who would have been fighting one fire with another at their backs, was the primary concern.
``It was just too dangerous to allow Pine Park to burn without some containment,'' she said.
Lightning ignited more than 20 fires in southwestern Utah and the Arizona Strip late Sunday, the BLM said.
The largest was an 80-acre fire on the Shivwits Paiute Reservation. Firefighters were making good progress on the blaze and none of the other fires was larger than five acres.
Meanwhile, about 280 firefighters battled the Red Bull Fire in Spanish Fork Canyon.
The fire, which was started by lightning on Thursday had burned about 1,000 acres north of U.S. Highway 6, about five miles east of the split with U.S. 89. The blaze was about 10 percent contained.
U.S. 6 remained opened, but Uinta National Forest officials urged motorists to be careful.
