Grover weather by month
What a typical year looks like in Grover, Colorado: average highs and lows, rain and snow, and the warmest and coldest days on record. No nearby active station has official 1991–2020 normals, so these are forecast.blue’s own averages computed from daily observations at Hereford, 13 km from Grover, over its available record (2022–2026) — not an NCEI normal; records cover 2022–2026.
The year at a glance
- Precipitation a year
- 13.5 in343 mm
- Snow a year
- Rare
- Last spring freeze
- May 22
- First fall freeze
- Rare
- Heating degree days
- —
- Cooling degree days
- —
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −7°−22° (heating, 99%) and 97°36° (cooling, 1%).
Month by month
Grover in January
Highs average 38°3° and lows 13°−10°, with 0.4 in10 mm of precipitation in a typical January.
- Record high
- 65°18° (2026)
- Record low
- −23°−31° (2024)
- Heating degree days
- —
- Cooling degree days
- —
Grover in February
Highs average 42°5° and lows 15°−9°, with 0.4 in10 mm of precipitation in a typical February.
- Record high
- 65°18° (2025)
- Record low
- −14°−26° (2023)
- Heating degree days
- —
- Cooling degree days
- —
Grover in March
Highs average 55°13° and lows 25°−4°, with 0.5 in13 mm of precipitation in a typical March.
- Record high
- 87°31° (2026)
- Record low
- 6°−14° (2026)
- Heating degree days
- —
- Cooling degree days
- —
Grover in April
Highs average 61°16° and lows 29°−2°, with 0.6 in15 mm of precipitation in a typical April.
- Record high
- 86°30° (2022)
- Record low
- 8°−13° (2022)
- Heating degree days
- —
- Cooling degree days
- —
Grover in May
Highs average 69°20° and lows 39°4°, with 2.4 in61 mm of precipitation in a typical May.
- Record high
- 88°31° (2022)
- Record low
- 22°−6° (2024)
- Heating degree days
- —
- Cooling degree days
- —
Grover in June
Highs average 81°27° and lows 49°10°, with 1.9 in48 mm of precipitation in a typical June.
- Record high
- 98°37° (2025)
- Record low
- 35°2° (2023)
- Heating degree days
- —
- Cooling degree days
- —
Grover in July
Highs average 88°31° and lows 56°13°, with 2.5 in64 mm of precipitation in a typical July.
- Record high
- 102°39° (2026)
- Record low
- 42°6° (2024)
- Heating degree days
- —
- Cooling degree days
- —
Grover in August
Highs average 86°30° and lows 54°12°, with 2.5 in64 mm of precipitation in a typical August.
- Record high
- 99°37° (2026)
- Record low
- 40°4° (2023)
- Heating degree days
- —
- Cooling degree days
- —
Grover in September
Highs average 81°27° and lows 47°8°, with 1.4 in36 mm of precipitation in a typical September.
- Record high
- 99°37° (2022)
- Record low
- 35°2° (2023)
- Heating degree days
- —
- Cooling degree days
- —
Grover in OctoberThis month
Highs average 67°20° and lows 34°1°, with 0.4 in10 mm of precipitation in a typical October.
- Record high
- 90°32° (2024)
- Record low
- 5°−15° (2023)
- Heating degree days
- —
- Cooling degree days
- —
Grover in November
Highs average 52°11° and lows 22°−6°, with 0.4 in10 mm of precipitation in a typical November.
- Record high
- 77°25° (2025)
- Record low
- −5°−21° (2022)
- Heating degree days
- —
- Cooling degree days
- —
Grover in December
Highs average 47°8° and lows 19°−7°, with 0.1 in2.5 mm of precipitation in a typical December.
- Record high
- 71°22° (2025)
- Record low
- −27°−33° (2022)
- Heating degree days
- —
- Cooling degree days
- —
Grover 10 W station, 1893–1970: records and averages
This station is no longer reporting, but its 1893–1970 record is the longest and most local history available. These are its own averages over its own period of record — not NCEI normals, and not the same station as the computed averages above.
January
Average high 40°5°, low 13°−11°, 0.3 in7.6 mm precipitation.
Record high 69°21° (1968); record low −32°−36° (1930).
February
Average high 43°6°, low 15°−9°, 0.4 in10 mm precipitation.
Record high 74°23° (1962); record low −32°−36° (1936).
March
Average high 49°9°, low 21°−6°, 0.7 in18 mm precipitation.
Record high 80°27° (1935); record low −26°−32° (1922).
April
Average high 60°15°, low 30°−1°, 1.3 in33 mm precipitation.
Record high 84°29° (1910); record low −5°−21° (1920).
May
Average high 69°21°, low 39°4°, 2.4 in61 mm precipitation.
Record high 93°34° (1934); record low 12°−11° (1917).
June
Average high 80°27°, low 48°9°, 2.1 in53 mm precipitation.
Record high 104°40° (1954); record low 24°−4° (1919).
July
Average high 88°31°, low 54°12°, 2.2 in56 mm precipitation.
Record high 106°41° (1939); record low 32°0° (1915).
August
Average high 86°30°, low 53°11°, 1.6 in41 mm precipitation.
Record high 105°41° (1935); record low 30°−1° (1910).
September
Average high 77°25°, low 44°7°, 1.2 in30 mm precipitation.
Record high 97°36° (1920); record low 8°−13° (1926).
October
Average high 66°19°, low 34°1°, 0.7 in18 mm precipitation.
Record high 90°32° (1915); record low −8°−22° (1917).
November
Average high 51°11°, low 23°−5°, 0.4 in10 mm precipitation.
Record high 79°26° (1915); record low −16°−27° (1916).
December
Average high 42°6°, low 16°−9°, 0.4 in10 mm precipitation.
Record high 79°26° (1915); record low −31°−35° (1919).
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