What is today's weather forecast for Promontory, UT?

Today's forecast for Promontory shows a low of 37 degrees Fahrenheit. A 40 percent chance of rain after 2am.

What is the 7-day weather forecast for Promontory, UT?

The 7-day forecast for Promontory shows highs from 40 to 51 degrees and lows from 28 to 40 degrees Fahrenheit. Expect precipitation on 7 days with chances of 20% or higher.

Will it rain in Promontory, UT this week?

Yes, rain is possible in Promontory this week. Precipitation chances: Tuesday (40% chance), Wednesday (60% chance), Thursday (60% chance), Friday (40% chance), Saturday (50% chance), Sunday (50% chance), Monday (50% chance).

How accurate is the Promontory weather forecast?

WeatherForYou provides highly accurate Promontory forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Promontory, UT Weather Forecast and Current Conditions

WEATHER ALERTS - High Wind Warning

Current Conditions From Nearby Station

Switch to Metric Units

40°F
Feels Like 38°F

Humidity 60% Dew Point 27°F Wind WNW 3 MPH Gusts 5 Barometer N/A

Report from a MADIS/MESONET weather station 13.7 mi. ENE of central Promontory
at 12:20 AM Wed, Dec 17, 2025

Point Forecast at a Glance

TueDec 16

40%

WedDec 17

60%

ThuDec 18

60%

FriDec 19

30%

SatDec 20

50%

SunDec 21

50%

MonDec 22

50%

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

High temperatures remain relatively stable through the week, ranging from 40°F to 51°F. Unsettled weather expected with rain or snow likely on at least 7 days.

Climate Context

This week's forecast shows temperatures running 13°F above the historical average for December. Normal highs for this period are around 35°F with lows around 17°F.

This Date in Weather History

1941 - Only two women were employed by the Weather Bureau. By 1945, more than 900 women are employed by the Weather Bureau as observers and forecasters, as a result of filling positions of men during World War II. Eleven days after Pearl Harbor, the Army requested that all weather broadcasts be discontinued. The fear was that the enemy would use this information to plan an attack on the United States.

Promontory, UT 7 Day Weather Forecast Details

Tuesday Dec 16

Night: A 40 percent chance of rain after 2am. Mostly cloudy, with a low around 37. South wind 3 to 6 mph.

Wednesday Dec 17

Day: A chance of rain before 11am, then rain likely, possibly mixed with snow between 11am and 2pm, then a chance of rain after 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 49. Breezy, with a south wind 10 to 15 mph becoming northwest 19 to 24 mph in the morning. Winds could gust as high as 37 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

Night: Mostly cloudy, with a low around 28. Northwest wind 15 to 20 mph becoming light and variable after midnight.

Thursday Dec 18

Day: Snow likely before 2pm, then rain likely, possibly mixed with snow. Mostly cloudy, with a high near 40. Calm wind becoming south 5 to 9 mph in the afternoon. Chance of precipitation is 60%. Little or no snow accumulation expected.

Night: A slight chance of rain and snow before 8pm, then a slight chance of rain between 8pm and 11pm. Mostly cloudy, with a low around 35. South wind around 7 mph. Chance of precipitation is 20%.

Friday Dec 19

Day: A 30 percent chance of rain, mainly after 11am. Mostly cloudy, with a high near 49.

Night: A 40 percent chance of rain. Cloudy, with a low around 37.

Saturday Dec 20

Day: Rain likely, mainly before 11am. Mostly cloudy, with a high near 46.

Night: A chance of rain. Mostly cloudy, with a low around 38.

Sunday Dec 21

Day: Rain likely, mainly before 11am. Mostly cloudy, with a high near 47.

Night: A chance of rain. Mostly cloudy, with a low around 40.

Monday Dec 22

Day: A chance of rain. Mostly cloudy, with a high near 51.

Night: Mostly cloudy, with a low around 39.

Tuesday Dec 23

Day: Partly sunny, with a high near 51.

About Promontory, UT

Promontory is an area of high ground in Box Elder County, Utah, United States, 32 mi (51 km) west of Brigham City and 66 mi (106 km) northwest of Salt Lake City. Rising to an elevation of 4,902 feet (1,494 m) above sea level, it lies to the north of the Promontory Mountains and the Great Salt Lake. It is notable as the location of Promontory Summit, where the first transcontinental railroad in the United States, from Sacramento to Omaha, was officially completed on May 10, 1869. The location is sometimes confused with Promontory Point, a location further south along the southern tip of the Promontory Mountains. Both locations are significant to the Overland Route: Promontory Summit was where the original, now abandoned, alignment crossed just north of the Promontory Mountains; while Promontory Point is where the modern alignment, called the Lucin Cutoff, crosses the southern tip of the Promontory Mountains. By the summer of 1868, the Central Pacific (CP) had completed the first rail route through the Sierra Nevada mountains, and was now moving down towards the Interior Plains and the Union Pacific (UP) line. More than 4,000 workers, of whom two thirds were Chinese, had laid more than 100 mi (160 km) of track at altitudes above 7,000 ft (2,100 m). In May 1869, the railheads of the Union Pacific and the Central Pacific railroads finally met at Promontory Summit, Utah Territory. A specially-chosen Chinese and Irish crew had taken only 12 hours to lay the final 10 mi (16 km) of track in time for the ceremony.

Content from Wikipedia, licensed under CC BY-SA 3.0.

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Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

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