Lockwood weather by month
What a typical year looks like in Lockwood, Montana: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Billings International Airport, 12 km from Lockwood; records cover 1934–2026.
The year at a glance
- Precipitation a year
- 14.3 in363 mm
- Snow a year
- 57 in146 cm
- Last spring freeze
- May 4
- First fall freeze
- Oct 5
- Heating degree days
- 6,755
- Cooling degree days
- 662
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −9°−23° (heating, 99%) and 98°37° (cooling, 1%).
Month by month
Lockwood in January
Highs average 36°2° and lows 18°−8°, with 0.55 in14 mm of precipitation and 11 in27 cm of snow in a typical January.
- Record high
- 68°20° (1953)
- Record low
- −30°−34° (1937)
- Heating degree days
- 1180
- Cooling degree days
- 0
Lockwood in February
Highs average 39°4° and lows 20°−7°, with 0.57 in14 mm of precipitation and 9 in23 cm of snow in a typical February.
- Record high
- 72°22° (1961)
- Record low
- −38°−39° (1936)
- Heating degree days
- 995
- Cooling degree days
- 0
Lockwood in March
Highs average 49°9° and lows 27°−3°, with 0.9 in23 mm of precipitation and 8 in21 cm of snow in a typical March.
- Record high
- 83°28° (2026)
- Record low
- −21°−29° (2014)
- Heating degree days
- 839
- Cooling degree days
- 0
Lockwood in April
Highs average 57°14° and lows 35°2°, with 1.7 in44 mm of precipitation and 8 in19 cm of snow in a typical April.
- Record high
- 90°32° (1939)
- Record low
- −5°−21° (1936)
- Heating degree days
- 577
- Cooling degree days
- 1
Lockwood in May
Highs average 67°19° and lows 44°7°, with 2.4 in60 mm of precipitation and 0.9 in2.3 cm of snow in a typical May.
- Record high
- 96°36° (1936)
- Record low
- 14°−10° (1954)
- Heating degree days
- 314
- Cooling degree days
- 14
Lockwood in June
Highs average 77°25° and lows 52°11°, with 2.2 in56 mm of precipitation in a typical June.
- Record high
- 105°41° (1984)
- Record low
- 32°0° (1943)
- Heating degree days
- 90
- Cooling degree days
- 81
Lockwood in July
Highs average 87°31° and lows 59°15°, with 1.2 in31 mm of precipitation in a typical July.
- Record high
- 111°44° (2026)
- Record low
- 41°5° (1972)
- Heating degree days
- 12
- Cooling degree days
- 269
Lockwood in August
Highs average 86°30° and lows 58°14°, with 0.87 in22 mm of precipitation in a typical August.
- Record high
- 105°41° (1961)
- Record low
- 35°2° (1992)
- Heating degree days
- 24
- Cooling degree days
- 230
Lockwood in September
Highs average 74°24° and lows 49°9°, with 1.4 in35 mm of precipitation and 0.3 in0.8 cm of snow in a typical September.
- Record high
- 103°39° (1983)
- Record low
- 22°−6° (1984)
- Heating degree days
- 168
- Cooling degree days
- 62
Lockwood in OctoberThis month
Highs average 59°15° and lows 37°3°, with 1.4 in35 mm of precipitation and 5 in11 cm of snow in a typical October.
- Record high
- 91°33° (2011)
- Record low
- −7°−22° (1991)
- Heating degree days
- 534
- Cooling degree days
- 5
Lockwood in November
Highs average 46°8° and lows 27°−3°, with 0.6 in15 mm of precipitation and 7 in17 cm of snow in a typical November.
- Record high
- 77°25° (1983)
- Record low
- −22°−30° (1959)
- Heating degree days
- 864
- Cooling degree days
- 0
Lockwood in December
Highs average 36°2° and lows 19°−7°, with 0.57 in14 mm of precipitation and 10 in25 cm of snow in a typical December.
- Record high
- 73°23° (1939)
- Record low
- −32°−36° (1983)
- Heating degree days
- 1158
- Cooling degree days
- 0