United States · 1991–2020

Best time to visit
Communications Hill

For Communications Hill, October has the most comfortable weather in our climate comparison. Typical daytime highs are 24.1°C, nights average 11.5°C, and rainfall totals about 14 mm. Figures use measured 1991–2020 normals from the nearest eligible NOAA station.

Best all-round monthOctober

Typical daytime high24.1°C

Typical night-time low11.5°C

October rainfall14 mm

Overall comfort

October

Other strong months: May and June

93/100 weather score

Outdoor sightseeing

April

Other strong months: November and May

95/100 weather score

Make the answer personal

Choose the weather
that suits you.

Set the daytime temperature and rainfall you are comfortable with. We will show only the months that meet every choice, using the measured 1991–2020 averages below.

Daytime high: at least 18°CDaytime high: at most 28°CMonthly rain: no more than 100 mmWet days: no more than 10

9 months fit your choices for Communications Hill

March18.9°C day · 47 mm rain · 7.6 wet days

April20.6°C day · 28 mm rain · 4.7 wet days

May23.1°C day · 7 mm rain · 1.5 wet days

June26.1°C day · 3 mm rain · 0.5 wet days

July27.1°C day · 0 mm rain · 0 wet days

August27.2°C day · 0 mm rain · 0 wet days

September27.1°C day · 2 mm rain · 0.3 wet days

October24.1°C day · 14 mm rain · 2 wet days

November18.9°C day · 31 mm rain · 5 wet days

The lowest comfort score is 48 out of 100. January and December share that score. In January, that is mainly because days reach only 15.4°C, 9° below the 24°C the score treats as ideal, and nights drop to 5.5°C.

Quick answers

Planning a trip to Communications Hill?

These answers come from the same measured monthly climate record shown on this page.

When is the best time to visit Communications Hill?

October is the strongest all-round choice in our temperature-and-rainfall comparison, with a typical daytime high of 24.1°C and 14 mm of rain.

What is the hottest month in Communications Hill?

August is hottest in this record, with a typical daytime high of 27.2°C and a night-time low of 14.9°C.

Which month has the least rain?

July and August have the lowest monthly rainfall total at 0 mm.

Is this a weather forecast?

No. These are long-term measured averages from 1991–2020. Check a current forecast before you travel.

Month by month

See how the weather
changes through the year.

The bars combine daytime temperature, night-time temperature and rainfall. The figures are measured historical averages, not a forecast for a particular trip.

4815.4° / 5.5°

5316.9° / 6.5°

6418.9° / 7.9°

7720.6° / 9.1°

9123.1° / 11.3°

9026.1° / 13.3°

8927.1° / 14.6°

8927.2° / 14.9°

8827.1° / 14.1°

9324.1° / 11.5°

6818.9° / 7.8°

4815.3° / 5.5°

Monthly climate evidence for Communications Hill — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	15.4°C	5.5°C	57 mm	6.7	9 h 51	48	Good coverage
February	16.9°C	6.5°C	62 mm	7.4	10 h 45	53	Good coverage
March	18.9°C	7.9°C	47 mm	7.6	11 h 51	64	Good coverage
April	20.6°C	9.1°C	28 mm	4.7	13 h 06	77	Good coverage
May	23.1°C	11.3°C	7 mm	1.5	14 h 09	91	Good coverage
June	26.1°C	13.3°C	3 mm	0.5	14 h 43	90	Good coverage
July	27.1°C	14.6°C	0 mm	0	14 h 29	89	Good coverage
August	27.2°C	14.9°C	0 mm	0	13 h 35	89	Good coverage
September	27.1°C	14.1°C	2 mm	0.3	12 h 23	88	Good coverage
October	24.1°C	11.5°C	14 mm	2	11 h 10	93	Good coverage
November	18.9°C	7.8°C	31 mm	5	10 h 07	68	Good coverage
December	15.3°C	5.5°C	55 mm	7.1	9 h 36	48	Good coverage

Records at SAN JOSE, 1998–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	25.6°C18 Jan 2021	-3.3°C13 Jan 2013	45 mm24 Jan 2000	143 mm2008 · driest 0 mm in 2022	28
February	27.2°C12 Feb 2022	-0.6°C11 Feb 1999	48 mm20 Feb 2017	142 mm2019 · driest 0 mm in 2020	28
March	31.7°C14 Mar 2015	1.1°C10 Mar 2009	31 mm5 Mar 2016	116 mm2006 · driest 1 mm in 2026	28
April	35.0°C20 Apr 2009	2.2°C9 Apr 1999	21 mm12 Apr 2012	76 mm2010 · driest 1 mm in 2008	28
May	37.2°C30 May 2001	5.0°C10 May 2022	17 mm4 May 2024	37 mm2019 · driest 0 mm in 2022	28
June	41.1°C14 Jun 2000	7.2°C8 Jun 1999	22 mm4 Jun 2011	39 mm2011 · driest 0 mm in 2025	28
July	40.0°C23 Jul 2006	10.0°C4 Jul 1999	1 mm31 Jul 2000	1 mm2000 · driest 0 mm in 2020	29
August	39.4°C14 Aug 2020	10.6°C15 Aug 1999	2 mm3 Aug 1999	2 mm1999 · driest 0 mm in 2008	28
September	42.8°C6 Sep 2022	7.8°C30 Sep 2009	17 mm21 Sep 2013	17 mm2013 · driest 0 mm in 2002	28
October	41.1°C2 Oct 2024	5.0°C31 Oct 2002	59 mm13 Oct 2009	61 mm2009 · driest 0 mm in 2013	28
November	29.4°C4 Nov 2010	-0.5°C28 Nov 2015	31 mm8 Nov 2022	66 mm2012 · driest 3 mm in 2021	28
December	23.9°C20 Dec 1999	-4.4°C24 Dec 1998	82 mm11 Dec 2014	197 mm2014 · driest 2 mm in 2017	28

Typical days per month at SAN JOSE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	1	2
February	<1	0	<1	2
March	3	<1	0	2
April	5	1	0	<1
May	9	3	0	<1
June	17	6	0	<1
July	24	6	0	0
August	24	6	0	0
September	20	8	0	0
October	13	3	0	<1
November	2	0	<1	1
December	0	0	1	2

How often different weather occurs at SAN JOSE, based on its daily record
Month	Dry days reaching 20°C	Wet days	Days with heavy rain	Weeks with 3+ wet days	Typical high by year
January	10%	21%	7%	24%	13.8–17.3°C
February	21%	25%	7%	35%	15.1–19.5°C
March	37%	25%	5%	27%	16.7–21.4°C
April	54%	14%	2%	13%	18.5–22.3°C
May	80%	5%	<1%	2%	21.0–24.9°C
June	98%	1%	<1%	0%	24.5–27.7°C
July	100%	<1%	0%	0%	25.8–28.6°C
August	100%	<1%	0%	0%	26.1–29.0°C
September	98%	1%	<1%	<1%	25.6–28.6°C
October	87%	6%	2%	4%	22.5–26.6°C
November	37%	16%	4%	15%	17.1–20.4°C
December	6%	23%	7%	28%	14.2–17.1°C

A dry day reaching 20°C records under 1 mm of rain. A wet day records at least 1 mm, while a heavy-rain day records at least 10 mm. The weekly figure is the share of seven-day periods containing three or more wet days. The final column shows the middle 80% of average daytime highs recorded for that month in individual years; a wider range means conditions have varied more from one year to another.

1999Each stripe is one year’s mean temperature against the 26-year average. Warmest: 2024. Coolest: 1999.2025

The evidence behind this page

Where these figures
come from.

Place identity: GeoNames 12104228
NOAA station: USW00023293 · SAN JOSE
Station distance: 9.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 22 usable years
Daylight: Calculated from latitude 37.29°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

Next step

Choose your month.
Then plan the details.

The weather comparison for Communications Hill is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.

How travel partnerships will work

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