ZIP code · Lake Mc Donald · Montana · United States
ZIP code 59921 — Lake Mc Donald
ZIP code 59921 serves Lake Mc Donald, Montana.
- Postal code
- 59921Single source Value from one source, not cross-checked.
- City
- Lake Mc Donald
- County
- Flathead
- State
- Montana
- Country
- United States
- Coordinates
- 48.2989, -113.9497 — precision estimated (postal-area centroid)
View on OpenStreetMap - USDA hardiness zone
- 5a (-20 to -15 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Denver (UTC−7 / UTC−6 DST)
- Area code
- 406 (from the nearest rate centre)Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 59921 with another ZIP · ZIPs within 25 miles · distance from 59921
Climate — monthly normals
Warmest month Jul (avg high 82°F), coldest Feb (avg low 20°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 31 | 34 | 43 | 53 | 64 | 71 | 82 | 81 | 69 | 52 | 38 | 31 |
| Avg low °F | 20 | 20 | 25 | 32 | 41 | 47 | 53 | 52 | 44 | 35 | 28 | 21 |
| Precip in | 3.6 | 2.5 | 3.2 | 2.6 | 2.9 | 3.8 | 1.4 | 1.2 | 2.2 | 3.5 | 3.9 | 3.7 |
NOAA 1991–2020 climate normals from the nearest station: HUNGRY HORSE DAM (4.5 mi) · NOAA NCEI
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page