California · THREADEX · 1935–2026
Alturas, CA
41.484°N, 120.561°W · station AATthr · 92 years of record
50°F
COLDEST JUL 17 SINCE 2025
forecast low · Jul 17
NWS NDFD forecast low temperature for Alturas.
This Day in History · Jul 17
Today ranks
#73 / 90
coldest Jul 17 in 90 yrs of record
Coldest Jul 17 ever
31°F
set in 1993
Mildest Jul 17 ever
68°F
set in 2014
Coldest Jul 17 — Year by Year
Every year's low on Jul 17 at Alturas. The forecast line shows where today lands; the ringed bar is the coldest on record.
| Forecast low · Jul 17 | 50°F |
| Coldest this date since | 2025 |
| This-date record | 31°F |
| This-date rank | #73 of 90 |
| Coldest at any time since | 2026 |
| All-time record | -34°F (1972) |
| Odds to tie/break | 0.0% (daily) |
| Period of record | 1935–2026 |
The hottest and coldest ever recorded at Alturas in each calendar month, and for the whole 1935–2026 record — with the year each was set.
| Month | Record High | Record Low |
|---|
| Jan | 69°F1961 | -32°F1937 |
| Feb | 72°F1986 | -33°F1989 |
| Mar | 82°F1966 | -7°F1971 |
| Apr | 85°F1987 | 7°F1997 |
| May | 95°F1983 | 14°F2010 |
| Jun | 105°F2021 | 21°F1973 |
| Jul | 107°F1960 | 28°F1976 |
| Aug | 106°F1961 | 26°F1960 |
| Sep | 106°F1955 | 15°F1950 |
| Oct | 93°F1961 | 0°F2002 |
| Nov | 82°F1962 | -17°F1985 |
| Dec | 71°F1939 | -34°F1972 |
| All-time | 107°F1960 | -34°F1972 |
Records set or tied at Alturas so far this year — through Jul 11.
Record Highs in 2026
6 broke
plus 2 tied — daily record highs set this year
Monthly high record this year: Mar (82°F)
Record Lows in 2026
1 broke
plus 0 tied — daily record lows set this year
Current run
0 days
consecutive days with a low ≤ 32°F
Longest ever
105 days
record run, ended Mar 17 2008
So far in 2026
100 days
days with a low ≤ 32°F this year
Normal low & low by month, from Alturas's own 1991–2020 record. Today's normal low: 46°F · forecast is +4° vs normal.
Sun & Daylight Today
| Sunrise | 4:40 AM |
| Sunset | 7:36 PM |
| Solar noon | 12:08 PM |
| Daylight | 14h 56m · losing 8 min/wk |
Local standard time (no DST), level horizon.
Location
Alturas's observed daily low for the last six weeks — a white ring marks any day that broke or tied its daily record for that date.
Every day this year against Alturas's own record — the record low, the normal, and the full span ever seen. A shareable look at where the year stands.
Each cell is one day's low at Alturas, coloured by temperature — 92 years of record, so heat waves read as warm streaks and cold snaps as blue.
How many days a year hit a given low at Alturas — counted through Jul 17 each year, so you can see whether 2026 is running cold. Pick a threshold:
100 days ≤32°F so far in 2026 — tied for the 82nd most in 92 years. Normal for this point: 112. Record: 139 in 1975.
A ready-to-share summary of Alturas's outlook — post it, or link this page.
See Alturas on hottestsince.com →