Blackhawk climate

Blackhawk Weather in January

NOAA 1991-2020 normals for Mt Diablo Junction, 6.8 km from Blackhawk

Average highs run from 53°F on January 1 to 54°F on January 31, and lows from 41°F to 42°F. Normal precipitation for the month is 5.06 in over about 12 wet days.

January day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Blackhawk, in °F, with the record for each date.020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

January at a glance

Average high
54°F
Average low
42°F
Precipitation
5.06 in
Snowfall
0.1 in
Record high
81°FJan 29, 2024
Record low
18°FJan 5, 1961
Chance of a freeze
60%
Daylight
9 h 37 min to 10 h 18 min
Cloud cover
60%
Humidity
84%
Dew point
42°F
Wind
6.7 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Jan 153°F41°F68°F 191419°F 191936%0%
Jan 253°F41°F69°F 195920°F 197636%0%
Jan 353°F42°F70°F 191321°F 196037%0%
Jan 453°F42°F69°F 191421°F 196137%0%
Jan 554°F42°F72°F 191118°F 196137%0%
Jan 654°F42°F77°F 191120°F 196137%0%
Jan 754°F42°F77°F 191120°F 197337%0%
Jan 854°F42°F72°F 191124°F 193737%0%
Jan 954°F42°F74°F 202519°F 193737%0%
Jan 1054°F42°F72°F 195324°F 192937%0%
Jan 1154°F42°F71°F 200921°F 194937%0%
Jan 1254°F42°F71°F 195923°F 196437%0%
Jan 1354°F42°F73°F 200920°F 194937%0%
Jan 1454°F42°F68°F 200921°F 192637%0%
Jan 1554°F42°F75°F 192021°F 196337%0%
Jan 1654°F42°F76°F 202123°F 190337%0%
Jan 1754°F42°F76°F 202123°F 193337%0%
Jan 1854°F42°F75°F 202122°F 191737%0%
Jan 1954°F42°F70°F 191921°F 194337%0%
Jan 2054°F42°F70°F 191920°F 192237%0%
Jan 2154°F42°F73°F 191921°F 192237%0%
Jan 2254°F42°F75°F 194819°F 193738%0%
Jan 2354°F42°F72°F 194820°F 193738%0%
Jan 2454°F42°F73°F 197523°F 196238%0%
Jan 2554°F42°F73°F 191121°F 195038%0%
Jan 2654°F42°F72°F 191822°F 194938%0%
Jan 2754°F42°F72°F 193124°F 194937%0%
Jan 2854°F42°F71°F 193422°F 197537%0%
Jan 2954°F42°F81°F 202424°F 197937%0%
Jan 3054°F42°F75°F 197622°F 197537%0%
Jan 3154°F42°F79°F 202222°F 197237%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Blackhawk, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PST).

January 1
sunrise 7:23 AM, sunset 5:00 PM
January 31
sunrise 7:12 AM, sunset 5:30 PM

Every day of January: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00045915 (Mt Diablo Junction), public domain. Records: NOAA GHCN-Daily, station USC00044997, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.