Water experts get more nervous with each passing day.

“We’re running out of time,” said Andy Pineda of the Northern Colorado Water Conservancy District. “We only have a month or two, and we are so far behind it’s going to take storms of epic amounts just to get us back to what we would think of as normal.”

Parts of Montana, the Pacific Northwest and Utah have benefited from a snowy winter. But across Colorado, the snowpack was just 72 percent of average as of Feb. 1, which means less water to dampen hillsides and mountains vulnerable to fire, less water for farms to use on early season crops, and less to fill lakes and reservoirs that ultimately trickle down into millions of toilets, taps and swimming pools across the state.

Heavy rains and snow have recently brought some hope to the parched states of Iowa, Minnesota and Missouri, where the drought is easing. But 55.8 percent of the United States remains locked in drought, according to the government’s latest assessments. And states like Nebraska and Oklahoma are facing precipitation deficits of as much as 16 inches.

Without damp soil, many wheat crops will have trouble growing come March and April when they should be in full bloom, and corn and soybeans could be stunted after they are planted this spring. In a year when farmers are planning another record planting, some might be forced to sow fewer seeds because there is not enough soil moisture to go around.

In southwestern Kansas, Gary Millershaski said the wheat on his 3,000 acres was as dry as it had ever been after two years of drought. But as snow fell around him, he was smiling, a guarded optimist for this year’s planting. “If we get above average rainfall from here on, we’re going to raise a wheat crop,” he said. “But what are the odds of that?”

Senator Mark Udall, Democrat of Colorado, put it this way: “Mother Nature is testing us.”

But Washington is also posing a challenge.