Skip to content

Checked

Calpine, CA in December

Daily 1991 to 2020 normals and December 2025 observations at Portola.

Month at a glance

Normal high
42°
Normal low
19°
Precipitation
4.28 in
Snow
7.2 in

Day by day

Normal high and low for each day, and what happened in December 2025

DateNormal highNormal lowChance of rain2025 high / low2025 precip.
12/0145°22°25%51° / 25°0.00 in
12/0245°21°26%56° / 23°0.00 in
12/0345°21°26%47° / 21°0.00 in
12/0444°21°26%40° / 18°0.00 in
12/0544°21°26%49° / 18°0.00 in
12/0644°21°26%57° / 22°0.00 in
12/0743°21°26%55° / 19°0.00 in
12/0843°20°26%59° / 21°0.00 in
12/0943°20°27%-- / --0.00 in
12/1043°20°27%62° / 23°0.00 in
12/1142°20°27%62° / 23°0.00 in
12/1242°20°27%60° / 21°0.00 in
12/1342°20°27%57° / 21°0.00 in
12/1442°19°27%58° / 20°0.00 in
12/1542°19°27%61° / 22°0.00 in
12/1641°19°27%59° / 26°0.06 in
12/1741°19°27%51° / 33°0.35 in
12/1841°19°27%56° / 29°0.00 in
12/1941°19°27%55° / 37°0.00 in
12/2041°19°27%46° / 40°0.04 in
12/2141°19°27%52° / 40°0.65 in
12/2241°19°27%48° / 41°2.15 in
12/2341°19°27%47° / 30°0.30 in
12/2441°18°27%58° / 30°0.90 in
12/2541°18°27%40° / --1.40 in
12/2641°18°27%40° / 27°1.80 in
12/2741°18°27%37° / 24°0.00 in
12/2841°18°27%41° / 16°0.00 in
12/2941°18°27%40° / 8°0.00 in
12/3041°18°27%41° / 18°0.00 in
12/3141°18°27%35° / 21°0.22 in