National Storms

Snow and rain totals for ZIP code 59601

Helena, MT

NOAA's National Snowfall Analysis estimates 22.6 inches of snow at ZIP code 59601 (Helena, MT) this season (since October 1, 2026), through November 7, 2026. The most in one day was 8.0 inches, in the 24 hours ending October 24, 2026. Last season (2025–26) it estimated 73.7 inches in all; the biggest day was 6.0 inches on March 15, 2026. Over the last 30 days, NOAA's MRMS analysis estimates 4.51 inches of rain and melted snow.

22.6″snow this season (2026–27)
3days with 1″+ snow this season
73.7″snow in 2025–26
4.51″rain, last 30 days

Pin: the Census center point of ZIP Code Tabulation Area 59601, in Lewis and Clark County. Values are NOAA estimates for the grid cell under the pin. City page: how much snow Helena got. Montana snowfall totals.

Last 14 days

24 hours ending (12:00 UTC)Estimated snowEstimated rain
November 7, 20260″0″
November 6, 20260″0″
November 5, 20260″0″
November 4, 20260″0″
November 3, 20260″0″
November 2, 20260″0.51″
November 1, 20260″0.09″
October 31, 20260.1″0″
October 30, 20260″0″
October 29, 20260″0″
October 28, 20260″0″
October 27, 20260.3″0.11″
October 26, 20260″0″
October 25, 20260″0″
Oct 2025: 12.4Nov 2025: 6.2Dec 2025: 4.6Jan 2026: 0.7Feb 2026: 17.4Mar 2026: 19.4Apr 2026: 9.6May 2026: 3.3Jun 2026: 0.1Jul 2026: 0Aug 2026: 0Sep 2026: 0Oct 2026: 22.6Nov 2026: 0Oct 2025Dec 2025Feb 2026Apr 2026Jun 2026Aug 2026Oct 2026max 22.6
Estimated snowfall by month, inches (ZIP code 59601 (Helena, MT))

Source: National Storms (nationalstorms.com), CC BY 4.0, data from the NOAA NOHRSC National Snowfall Analysis.

Snow by season

Season (Oct 1 – Sep 30)Total snowDays with 1″+Biggest day
2026–27 (so far)22.6″38.0″ on Oct 24, 2026
2025–2673.7″236.0″ on Mar 15, 2026

Biggest snow days since October 2025

24 hours endingEstimated snow
October 24, 20268.0″
October 11, 20267.7″
October 12, 20266.5″
March 15, 20266.0″
February 9, 20265.7″
October 13, 20255.5″
March 14, 20265.3″
November 29, 20254.7″
December 6, 20253.6″
February 18, 20263.4″

Rain and melted snow by month

MonthEstimated precipitationEstimated snow
Nov 20260.60″0.0″
Oct 20263.91″22.6″
Sep 20261.48″0.0″
Aug 20261.24″0.0″
Jul 20260.81″0.0″
Jun 20263.04″0.1″
May 20262.50″3.3″
Apr 20261.67″9.6″
Mar 20262.21″19.4″
Feb 20260.87″17.4″
Jan 20260.11″0.7″
Dec 20252.80″4.6″
Nov 20250.89″6.2″
Oct 20251.70″12.4″

Wettest days since October 2025

24 hours endingEstimated rain
May 31, 20261.64″
October 24, 20261.62″
October 11, 20261.16″
June 29, 20261.10″
October 12, 20261.02″
October 13, 20250.74″
June 30, 20260.70″
December 12, 20250.67″
March 15, 20260.67″
March 14, 20260.62″

Spotter snow reports near 59601

35 measured snowfall reports within 10 miles since October 2025, on 12 days. The largest was 15.0 inches at 7 SW Helena, MT (3.8 miles away), reported to NWS TFX for March 15, 2026. Below: the largest report each day, next to NOAA's 24-hour estimate for 59601.

Day (ending 11 a.m. EST)Largest reportWhereTimeReported toNOAA estimate here
Oct 24, 20267.5″ (3 reports)5 SE Blossburg, MT, 4.2 mi Oct 23, 7:40 p.m. MDTNWS TFX, Trained spotter8.0″
Oct 12, 202611.0″ (5 reports)8 WNW Clancy, MT, 3.6 mi Oct 11, 3:37 p.m. MDTNWS TFX, Trained spotter6.5″
Oct 11, 202612.4″ (4 reports)2 W Helena, MT, 8.2 mi Oct 11, 8:58 a.m. MDTNWS TFX, Trained spotter7.7″
Apr 24, 20267.0″ (2 reports)Frohner Meadow, MT, 6.3 mi Apr 24, 8:00 a.m. MDTNWS TFX, Mesonet2.6″
Mar 15, 202615.0″ (6 reports)7 SW Helena, MT, 3.8 mi Mar 14, 5:43 p.m. MDTNWS TFX, Trained spotter6.0″
Mar 14, 20266.0″ (2 reports)2 NNW Helena, MT, 9.8 mi Mar 14, 9:30 a.m. MDTNWS TFX, CoCoRaHS5.3″
Mar 13, 20266.0″11 W Helena, MT, 4.2 mi Mar 13, 8:43 a.m. MDTNWS TFX, Trained spotter1.5″
Feb 10, 20264.5″3 WNW Montana City, MT, 9.6 mi Feb 9, 12:00 p.m. MSTNWS TFX, Trained spotter1.9″
Dec 6, 202510.0″7 NW Corbin, MT, 6.3 mi Dec 6, 8:00 a.m. MSTNWS TFX, Mesonet3.6″
Nov 29, 20254.0″ (4 reports)3 WNW Montana City, MT, 9.6 mi Nov 28, 8:00 p.m. MSTNWS TFX, Trained spotter4.7″
Oct 14, 202510.8″ (3 reports)2 W Helena, MT, 8.2 mi Oct 13, 11:53 a.m. MDTNWS TFX, Trained spotter1.9″
Oct 13, 202510.0″ (3 reports)1 SE Helena, MT, 9.9 mi Oct 13, 8:22 a.m. MDTNWS TFX, Trained spotter5.5″

Spotter reports: National Weather Service Local Storm Reports (LSRs): measurements sent to NWS offices by trained storm spotters, CoCoRaHS and co-op observers, NWS staff, the public and others, archived by the Iowa Environmental Mesonet (Iowa State University). Reports are what each observer measured at one spot, often a storm total so far, and the NWS doesn't quality-check every one. Exact repeats count once.

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Sources

Snow: NOAA National Operational Hydrologic Remote Sensing Center (NOHRSC), National Snowfall Analysis (version 2.1), 24-hour totals on a 0.04° grid (about 4 km). NOHRSC builds it from NWS, CoCoRaHS and other snowfall reports, radar and gauge precipitation (Stage IV) and model snow-to-liquid ratios. Rain: NOAA MRMS multi-sensor 24-hour precipitation (radar adjusted to rain gauges, about 1 km), from the Iowa Environmental Mesonet archive; it is total liquid, so it includes melted snow and sleet. Places: US Census Bureau ZIP Code Tabulation Areas (2024 Gazetteer internal points) and city centers. Each value is the estimate for the grid cell that contains the ZIP code's or city's center point, not a measurement at your house. NOAA reruns recent analyses as late reports arrive, so the last few days can change slightly. These are our own summaries of public NOAA data; NOAA has not reviewed them.

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