How Much Fell
Method and accuracyMethod

How much rain and snow fell in Great Falls, Montana?

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Great Falls got 1.52 in of rain in the last 24 hours (to 2 PM MDT, Oct 11). Past 7 days: 1.86 in. This year: 19.87 in (154 percent of normal).

Yesterday and last night (24 hours to 6 AM MDT, Oct 10): no rain.

3.1
inches
of new snow

In the 24 hours to 6:00 AM MDT, Sunday, October 11, 2026

NOAA snow estimate

1.52 in melted to water radar estimate

  • NOAA snow estimate
  • Melted to water, estimated from weather radar

Compared with normal

  • Last 7 days1.59 in wetter than normal (normal 0.27 in, Oct 5 to 11, Great Falls Airport, 1991 to 2020)1991 to 2020 average (the official normal), NOAA station records, Great Falls Airport
  • This month1.30 in wetter than normal (normal 0.50 in, Oct 1 to 11, Great Falls Airport, 1991 to 2020)1991 to 2020 average, NOAA station records, Great Falls Airport
  • This year6.93 in wetter than normal (normal 12.94 in, Jan 1 to Oct 11, Great Falls Airport, 1991 to 2020)1991 to 2020 average, NOAA station records, Great Falls Airport

Will this match my gauge? Each day here ends at 6:00 AM MDT, close to when volunteers read their rain gauges? (about 7 AM). How close we usually are

Great Falls 3.1Great Falls 3.1
New snow, inches
0.1
1
2
4
6
8
12
18
24+
Snow in the 24 hours to 6 AM Sunday, Oct 11. NOAA snowfall analysis.
Labels: Great Falls and nearby towns within 40 miles, in inches. Cut from the state map.

The 447th biggest snow day in Great Falls since 1937, and the most since January 24, 2025.

NOAA station records · Great Falls Airport (USW00024143), 4.4 mi away · 446 bigger days out of 31,908 on record, 20 tied days. This storm: Oct 11 to Oct 11, 3.1 in of new snow; its biggest day, Oct 11, was 3.1 in.

The most rain in a day in Great Falls since June 29, 2020, and the 33rd wettest day at Great Falls Airport since 1937.

NOAA station records · Great Falls Airport (USW00024143), 4.4 mi away · 32 wetter days out of 32,088 on record, no ties. This storm: Oct 11 to Oct 11, 1.46 in of rain; its biggest day, Oct 11, was 1.46 in.

The last 14 days

Sep 27 to Oct 10, 2026

New snow, inches (NOAA snow estimate)

  1. n/m
  2. n/m
  3. n/m
  4. n/m
  5. n/m
  6. n/m
  7. n/m
  8. n/m
  9. n/m
  10. n/m
  11. n/m
  12. n/m
  13. n/m
  14. n/m
  1. 0.00
  2. 0.00
  3. 0.00
  4. 0.00
  5. 0.05
  6. 0.00
  7. 0.00
  8. 0.00
  9. 0.00
  10. 0.00
  11. 0.00
  12. 0.00
  13. 0.00
  14. 0.00

Melted to water, inches (radar estimate)

Each bar is one day ending 6:00 AM MDT. T = a trace, too little to measure; n/m = not measured.? Every value is printed, so the chart reads without color.

October 2026, day by day

Tap a day to see its total
Sun
Mon
Tue
Wed
Thu
Fri
Sat

Tap a day for its total.

Figures: rain, inches (radar estimate); new snow, inches (NOAA snow estimate). Striped days are not measured or not in the data; days marked not yet are after the latest day. Each day ends 6:00 AM MDT.

Total for a date range

Loading the total.

Rain goes back to Oct 14, 2020; snow to Oct 1, 2008. Days labeled by the date they end.

Every rain total for Great Falls

PeriodRain
Last 24 hours, to 6:00 AM MDT Oct 111.52 in radar estimate
Last 72 hours1.85 in radar estimate
Last 7 days1.86 in radar estimate
This month so far1.80 in radar estimate
This year, 2026 so far19.87 in radar estimate

Every snow total

PeriodNew snow
Last 24 hours3.1 in NOAA snow estimate
Last 72 hours3.1 in NOAA snow estimate
Last 7 daysnot measured
This month so farnot measured
This season so farnot measured

How months count

Great Falls at a glance

Great Falls is in Montana, at about 3,332 ft above sea level at its Census center point and had an estimated 60,013 residents in 2024.

The weather station's records since 1937 come from Great Falls Airport, 4.4 miles away.

The wettest day on record at Great Falls Airport was 2.87 in on August 23, 2014; the biggest snow day was 16.5 in on April 20, 1973.

From Sep 27 to Oct 10, Great Falls had measurable rain on 1 day out of 14 with data, 0.05 in of rain in all, by weather radar. The wettest day was Thu, Oct 1, with 0.05 in.

Nearby rain gauges (read by volunteers)

within 15 miles

No rain gauge read by a volunteer within 15 miles reported today.

Volunteer gauge reports: CoCoRaHS (cocorahs.org), CC BY 3.0. Measured by hand once a day; report date October 11, 2026. Shown as measured, not edited.

How close? Radar rain estimates are usually within about 10 to 15 percent of a rain gauge in your yard. City snow totals are usually within about 25 percent or 1 inch of what volunteers measure. Method and accuracy